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Equipment & Gear => Power Equipment & RV => Topic started by: Al Bundy on January 22, 2010, 12:40:10 PM
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I had my car in the shop the other day. The guy at the shop said my tranny fluid looked a little dirty and recommended a flush. I've heard bad things about it loosening sludge and causing problems, so I was wondering if this is really necessary or if a regular filter and fluid top off would be alright. Anyone know?
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What kind of car and what miles? i would speculate that if it is a "little dirty" there shouldnt be any sludge :dunno:. if there is sludge it has been too long anyway
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Have them change the filter and then flush/service the system.
It removes all the fluid and replaces it with clean/fresh were a fliter only service will not do this.
Make sure thay are using a good quality fluid or the OEM fluid for replacment.
Make sure this is also a good shop and not a Quickie lube..
And no, you will not loosen slduge and damage your trans.
And no if your trans is not shifting correctly/slipping or acting unusual a service will not fix it either.
ATF flushes should be a regular service to help extend the life of the component. 30K on average is a good bench mark to stick to.
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JIMKD8
It's a Kia Rio with about 85,000 miles on it. I had a trans filter change done at about 35,000.
Buckmark
This is a shop I've been using for a while now. They know me and do good work so I trust them. It shifts fine and doesn't slip either.
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Have them change the filter and then flush/service the system.
It removes all the fluid and replaces it with clean/fresh were a fliter only service will not do this.
Make sure thay are using a good quality fluid or the OEM fluid for replacment.
Make sure this is also a good shop and not a Quickie lube..
And no, you will not loosen slduge and damage your trans.
And no if your trans is not shifting correctly/slipping or acting unusual a service will not fix it either.
ATF flushes should be a regular service to help extend the life of the component. 30K on average is a good bench mark to stick to.
I agree..
Ant thoughts on Chevy Duramax Allison Transmision flushes??? I may just start a thread getting everyones opinions..
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have em do it, 50k is typically too long
on the duramax, book says 50k, i wouldnt let it go that long
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I can tell you from personal experience that Chrysler does not recommend transmission "flushes" or any "flushes" for that matter and the same goes for Toyota. Toyota actually put something in writing and sent it to the dealer service departments advising against it. I don't work for Toyota anymore so I don't have any access to it anymore. Personally I would not hook a transmission flush machine up to anything I owned. I'm a big fan of old school transmission services.
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I did it to my truck once did I ruin it?
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I can tell you from personal experience that Chrysler does not recommend transmission "flushes" or any "flushes" for that matter and the same goes for Toyota.
That's one of the things I've heard about them. They can actually void warranties with some manufacturers. Just another reason I thought I'd get some opinions about it.
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Personally I would not hook a transmission flush machine up to anything I owned. I'm a big fan of old school transmission services.
Agree'd!
As an experienced shade tree mechanic.... I don't care what brand of tranny, Drain and a filter change every 100,000 miles. Let the gunk and sludge that's collected were it is.. Stay there.
On another note.. Small shop? How well do you know this mechanic? Sales tactic? I remember when I ran a gas station with service bays. Oh, we did tires and oil leaks and alignments and oil changes, brake jobs.. tuneups. Anything shy of pulling a tranny, diff or engine. With every oil change we had a list (that I wrote) of things to check and ask the customer if they wanted us to replace. Who really changes their antifreeze/coolant?.. Or thier air filter when they should? We'd talk the customer into another job. It was easy to look at the owners manual to see when the prescribed interval was to convince the auto owner.
-Steve
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I'm totally not agreeing with your 100k mile interval. Some of our vehicles are 30k like the trucks, jeeps, etc. A lot of ours are 50k and some are non-serviced.
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I can tell you from personal experience that Chrysler does not recommend transmission "flushes" or any "flushes" for that matter and the same goes for Toyota. Toyota actually put something in writing and sent it to the dealer service departments advising against it. I don't work for Toyota anymore so I don't have any access to it anymore. Personally I would not hook a transmission flush machine up to anything I owned. I'm a big fan of old school transmission services.
I will add that by what i mean by a flush, is a fluid exchange only, no chemical cleaners or flush agents should ever be used.
Removing and replacing as close to the total capacity by means of the transmission cooler lines by equipment designed for this purpose.
As far a toyota is concerned they actually never recommend changing the fuild ever, they calim that under normal conditions that it never needs to be done. One of the biggest reasons for that is to lower the "cost of ownership" amount that a buyer should expect to pay during there ownership, hence making that vehicle sound like its inexpensive to operate and maintain.
Kinda like some manufactures not having a timing belt service interval on interference engines.
O'brien sure did like to push his writers on p/s flushes though?
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And dont get me going on Chrysler/Dodge, the minivans should have come with a replacment transmission in the glove box when you bought the vehicle.
Almost guaranteed failure...
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O'brien sure did like to push his writers on p/s flushes though?
till Toyota came out with the "no flushes" letter.
:chuckle:
the chrysler minivan tranny's paid my mortgage for a while man, come on!!
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I want to live in a town that has 2 kinds of cars. chrysler and vw. come on down :)
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I'm totally not agreeing with your 100k mile interval.
You're right, that's well beyond many manufactures suggested intervals. Most say change fluid every 30-50k.
Just always been my experience that tranny fluid nowadays lasts longer than most people think. And I've had a lot of trannys opened up. (Oh, I've built a few hot rods and restored or been part of many Mustang restorations. I also live rural... Don't sit in traffic all day. But, I've also had some rough service trannys that looked great inside when opened up well after 200k miles that never had a fluid change.
Best thing for an automatic tranny is a cooler rated for the load.
-Steve
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Ant thoughts on Chevy Duramax Allison Transmision flushes??? I may just start a thread getting everyones opinions..
[/quote]
The allison has an external filter which is an easy service
The recommendation is every 50k for fluid service under "Normal" conditions which in a truck means only driving to church.
The recommendation for "Severe" service is every 25k - use this recommendation.
I dont service these units as there is a special adapter for the cooler line for doing the fluid exchange/flush.
The adapter is actually listed under a service bulletin from GM as
A/T Allison cooler line adapter tool/flushing
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the 1st flush machines we got introduced to us 10 years ago at the GMC shop the company advised us NOT to use the trans flush on anything with over 60k miles that had not been flushed previously. they would also offer a warranty on the cooling system if the car had a coolant flush under 30k miles...
crazy stuff...that was back when cars had maintenance intervals on them. all this no maintenance crap is sucking the gravy out of me.
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Talk to the army about the DuraIsuzuMini/Allison maintenance intervals. I've heard that the guys hate them.
OK, I'm bashing Government Motors now.. Sorry. Yes, Ford and Dodge have also had issues with automatic tranny's behind diesel engines..
That's why I have the ZF6spd behind my Power Stroke! :chuckle:
And those soccer mom minivans.. C'mon.. The Bic lighter is disposable. So are minivans!
-Steve
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the scary thing jackelope is that people buy that garbage. you dont maintain it, it will die. mercedes trans says "filled for life".........sure
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A lot of the chrysler no maintenance transmissions are daimler/mercedes-influenced units. fine if they want to do a no maintenance but they could have at least built them with a F-ing dipstick.
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i can usually find the dipstick behind the wheel :chuckle:
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Fluid level indicator...
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They did remove this fine feature to prevent unknowledgable and uninformend people from adding the incorrct fluid to the trans and causing problems.
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If the manufctures would all get together and adopt industry wide fluids for systems we would all be alot better off.
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:yeah: but then the aftermarket could wipe em out, gotta keep it in house
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Ive flushed a tranny or two myself. Drain pan, remove/replace filter, install pan, add fluid, disconnect return line, start engine briefly, old fluid will come out of return line, add fluid as you go so the tranny doesnt go empty.
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:yike:
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And the shade trees grow big in his part of the world.
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It never killed any of my trucks, but probably why I aint no mechanic lol...
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buy a lottery ticket, your a lucky man
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For any of you Dodge truck owners, DO NOT flush the 47RH, 47 RE or 48RE transmissions.
Drain the pan, change the filter at the bare minumum. Drill and tap the convertor and get rid of that fluid is even better.
47RH thru 48RE covers model years '94 thru early '07 with the CTD engine.
ATF+4 or greater only.
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I'll give you credit for at least doing some maintinance, better than none.
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buy a lottery ticket, your a lucky man
I do an still cant win, got 4 out of 5 numbers, but that was only worth a c-note.
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On another note.. Small shop? How well do you know this mechanic? Sales tactic? I remember when I ran a gas station with service bays. Oh, we did tires and oil leaks and alignments and oil changes, brake jobs.. tuneups. Anything shy of pulling a tranny, diff or engine. With every oil change we had a list (that I wrote) of things to check and ask the customer if they wanted us to replace. Who really changes their antifreeze/coolant?.. Or thier air filter when they should? We'd talk the customer into another job. It was easy to look at the owners manual to see when the prescribed interval was to convince the auto owner.
-Steve
They are an independent shop that will do everything including transmissions, engine rebuilds yada, yada, yada. I've been using them for a couple of years now. I know a couple of other people who use them too. They do great work for a good price and won't try to upsell you anything that isn't necessary.
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Now that we have gone almost 4 pages, how about a show of hands as to whether he should or should not have this service performend.
Yes. :hello:
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YES :hello:
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For any of you Dodge truck owners, DO NOT flush the 47RH, 47 RE or 48RE transmissions.
Drain the pan, change the filter at the bare minumum. Drill and tap the convertor and get rid of that fluid is even better.
47RH thru 48RE covers model years '94 thru early '07 with the CTD engine.
ATF+4 or greater only.
Chrysler says no flushes at all.
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.....won't try to upsell you anything that isn't necessary.
a transmission flush is not necessary.
I say NO. How are you gonna see if there's a trans issue developing when you don't pull the pan and instead you flush everything out without looking?
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.....won't try to upsell you anything that isn't necessary.
a transmission flush is not necessary.
I say NO. How are you gonna see if there's a trans issue developing when you don't pull the pan and instead you flush everything out without looking?
Read my first response to this post...
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I did.
That would be the only way to see it but then you're double-dipping and it costs 2x the amount. I'm one of those types that doesn't necessarily believe in the need for trans flushes in case you haven't figured that out yet.
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For the sake of argument here we are talking a Kia Rio and no other Makes.
From what we have gathered the vehicle has 85k on it.
Has had the ATF filter changed once at 35k.
We do not know the year of the vehicle but a sample of Kia Rio recommendations and not others, is under "Normal" Driving conditions the ATF should be serviced at 105k, no recommendation on the type of service just that a service should be performend.
Very few people actually fall into the "Normal" service catagory.
If we look at "Severe" service the recommended interval is now at every 30k, again with no mention to what type, just service.
I am unable to find a recommendation on the filter for any service interval.
So given that the vehicle has 50k since the last filter change/service, my recommendation would be again, pull the pan, replace the filter and machine service (flush) out the system on this Kia Rio.
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If Dodge/Chrysler, Toyota or whomever did not have a "Do Not Flush" service bulletin on there vehicles then the service departments would be selling them.
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Now that we have gone almost 4 pages, how about a show of hands as to whether he should or should not have this service performend.
Yes. :hello:
Uhhh... Yes. :hello: You are not going to hurt your transmission by flushing it out unless it is the consistancy of mud. Sounds like the fluid is ok so flush it out. If your worried about it then drain the fluid and change the filter and then drain the torque converter. Fill 'er up and you'll be good to go.
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Disagree'd. A chemical presure flush will knock out a whole lot more 'normal sludge' than just a drain and filter change will.
I vote drain and filter change if anything at all.
How are you gonna see if there's a trans issue developing when you don't pull the pan and instead you flush everything out without looking?
By sending the oil sample off to a lab to be analized to see what is breaking down in the transmission. :chuckle:
I've done it to my truck diesel 'engine' oil twice. Nothing abnormal reported.
Would I do that for a lesser vehicle that I didn't expect to run for 400,000 miles? No.
-Steve
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pressure flush= headaches. do a drain and refill plus a filter if you are worried. if you are curious, pull a sample and get it tested.....pretty easy and answers all the questions.
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just drain and refill. do not flush it
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I've done it to my truck diesel 'engine' oil twice. Nothing abnormal reported.
never done it or had it done to any of my customer's vehicles. one time i had a grand cherokee that jiffy lube forgot to put oil in and they had us pull an oil sample and they sent it to a lab after we put oil back in it. thats a whole nother topic...
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I have a 2004 Dodge 2500 with diesel. I had my tranny flushed at the Dodge dealer as part of my 90,000 mile service. It cannot hurt your trans to run clean fluid through it. There is no chemical additive to "break" loose sludge, it merely uses trans fluid to force the residual fluid (which may have particulates in it) through the entire system including the converter. How can this possibly be harmful unless the pressures used exceed the normal? I am anal about service intervals, my brother who has the same truck is horrible about getting his service work done and has had lots of issues. At 90,000 he had to replace his trans(he had his trans serviced once at 60,000). If you use your truck like a truck, towing, hauling heavy loads, then you need to service it more often. Your trans will heat up under those conditions and "burn" the fluid which reduces it's ability to perform. If you use your truck as a "grocery getter" then maybe you can get away with a service every 100,000.
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I would never flush a transmission. I always drop the pan clean reinstall with a new gasket.
THink if this...
A flush is a violent push of the fluid through your transmission. If there is any debris in your pan, which there is a magnet that picks up the metal shavings and anything else that has happens to be there. In an automatic transmission there is too much crap to go wrong. You will not get all the old fluid out if you drop the pan but you will NOT throw any thing that has dropped into the pan this sitting on the bottom of the pan back up into the transmission.
Just my opinion...
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THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 26-003-07, DATED
MARCH 30, 2007, WHICH SHOULD BE REMOVED FROM YOUR FILES. THIS IS A
COMPLETE REVISION AND NO ASTERISKS HAVE BEEN USED TO HIGHLIGHT
REVISIONS.
SUBJECT:
Fluid Flushing Requirements
MODELS:
2005 - 2008 (CS) Pacifica
2006 - 2009 (D1) Ram Truck (3500 Pick Up)
2010 (D2) Ram Truck (3500 Pick Up)
2007 - 2010 (DC) Ram Truck (3500 Chassis Cab)
2005 - 2009 (DH) Ram Truck (1500/2500 Pick Up)
2010 (DJ) Ram Truck (2500 Pick Up)
2005 - 2008 (DR) Ram Truck (1500 / 2500 Pick Up)
2009 - 2010 (DS) Ram Truck (1500)
2005 - 2009 (HB) Durango
2007 - 2009 (HG) Aspen
2009 - 2010 (JC) Journey
2007 - 2010 (JK) Wrangler
2005- 2006 (JR) Sebring Sedan & Convertible/Stratus Sedan
2007 - 2010 (JS) Avenger/Sebring
2008 - 2010 (KK) Liberty
2007 - 2010 (KA) Nitro
2005 - 2007 (KJ) Liberty
2009 - 2010 (LC) Challenger
2005 - 2010 (LE) 300C/300C Touring (International Markets)
2005 - 2010 (LX) 300/Magnum/Charger
2007 - 2010 (MK) Compass/Patriot
2005 - 2010 (ND) Dakota
NUMBER: 26-001-09
GROUP: Miscellaneous
DATE: September 24, 2009
2005 - 2006 (PL) Neon
2007 - 2010 (PM) Caliber
2005 - 2010 (PT) Chrysler PT Cruiser
2005 - 2007 (RG) Chrysler Voyager (International Markets)
2005 - 2007 (RS) Town & Country/Caravan/Voyager
2009 - 2010 (RT) Town & Country/Grand Caravan
2005 - 2006 (TJ) Wrangler
2005 - 2006 (VA) Sprinter
2007 - 2010 (VB) Sprinter
2005 - 2010 (WH) Grand Cherokee (International Markets)
2005 - 2010 (WK) Grand Cherokee
2006 - 2010 (XH) Commander (International Markets)
2006 - 2010 (XK) Commander
2005 - 2010 (ZB) Viper
2005 - 2007 (ZH) Crossfire
DISCUSSION:
Chrysler Group vehicle fluid systems do NOT require regular flushing. These systems
include: engine oil, transmission oil, axle lube, brake fluid, power steering fluid, and
refrigerant. The only exception to this requirement are published in the vehicle
maintenance schedules, e.g. engine coolant.
Exceptions to this recommendation include only those instances where a failure has
occurred and/or the system has become compromised, contaminated or overheated
beyond the normal operating range.
Chrysler Group does NOT recommend aftermarket chemicals to flush the engine,
transmission, brake or steering systems. Chemicals contained in these products can
damage the system elastomeric components, and contaminate the component fluid,
leading to loss of system/component durability and service life. When necessary, only the
original approved system fluid should be used to flush these components using teamPSEŽ
approved equipment.
If the engine coolant contains a considerable amount of sediment, clean and flush with
Mopar Cooling System Flush, p/n 04856977, or equivalent. Follow with a thorough rinsing
to remove all deposits and chemicals. Refill with a minimum of a 50% mixture of the
specified coolant and distilled water.
POLICY:
Information Only
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I would never flush a transmission. I always drop the pan clean reinstall with a new gasket.
THink if this...
A flush is a violent push of the fluid through your transmission. If there is any debris in your pan, which there is a magnet that picks up the metal shavings and anything else that has happens to be there. In an automatic transmission there is too much crap to go wrong. You will not get all the old fluid out if you drop the pan but you will NOT throw any thing that has dropped into the pan this sitting on the bottom of the pan back up into the transmission.
Just my opinion...
A flush doesn't involve a violent push of fluid, it is done at a lower pressure than the trans operates at. When the flush is complete, the pan is dropped and the filter is changed. Thanks for the service bulletin Jackalope, it does say that flushing is not a requirement. It doesn't say that it cannot be performed though and does recommend it if you have overheated the fluid. My flush was done at a Dodge dealer, they recommended that I do it if I hauled heavy loads over the passes. I work my truck hard and know that my fluid has probably gotten hot a few times.
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:bash: :bash: :bash: A transmission flush WILL NOT hurt your transmission. There are no "flush chemicals" added. This is how a flush machine works. You pull off the cooler hose on the outlet of the trans cooler. Then you connect cooler outlet to the catch tank hose on the flush machine. Then you connect the flush machine fresh fluid side to the cooler hose that you disconnected. So the fluid from your car/truck gets pumped into the machine and then the machine pumps fluid back into the vehicle. A trans flush machine does not pump or flush fluid throughout your transmission. All it does is refill your transmission pan when the fluid is pumped out. Your own transmission pump is pumping the fluid throughout the trans because the vehicle is running. So there is no more or less pressure in the system.
You should change the filter before you flush the trans that way your new filter won't get any debris in it.
You can do this job yourself in your driveway and it works the same way. Pull the trans cooler hose off of the outlet side of your trans cooler. (outlet side because you want to flush the cooler out too). Connect a hose to the outlet and run the hose into a pan. Have someone start the vehicle and as the fluid is pumped out of the cooler into the pan, refill with fresh fluid with a funnel through the fill port or dipstick tube. This is basically how the flush machine works.
Hope this helps. Tony
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Geno-
some transmission flushers use a chemical. all of the aftermarket flush machine companys push a chemical additive that i have dealt with. whether the shop chooses to use them is up to the shop.
the schedule A maintenance schedule for a transmission service on a 2500 ram truck is 100k miles. you'll never see me recommend that schedule, but it is acceptable by chrysler standards if they are not towing and heavy load, etc.
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Rephrase from my previous post. Yes there are chemicals that are pushed by companies like jackelope stated but they are unnecessary and should not be used. The manufacturers recomended fluid is all you should use.
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I have to agree that the recommended service intervals are flawed. People buy trucks for towing and hauling and need service more often. That's why trannies fail around 100,000 miles, because people wait until then to service them. Also you should never stay in overdrive when going up a pass, especially hauling a load. That will burn up a trans in a hurry.
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Geno-
Rairdon's recommended a transmission flush because they make money off of you. the service advisor got $2 cash for it and the tech got a spiff too.
Timberghost...no need to explain to a few of us how a flush works...a few of us in this thread are surrounded by this stuff every day. there are chemicals added...trust me...if the shop uses chemicals. Rairdons, for example, uses chemicals when they flush transmissions...just ask me, i know.
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Yeah I realize that some on here don't need the explanation. I know a few on here are mechanics or are in the industry. I was just trying to explain it for the folks who do not know much about automotive repairs. Hence the whole start of this topic.
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Jackalope, no need to explain how the automotive sevice industry makes money off of you...you obviously work or have worked there. I also have worked as a dealership mechanic and part of what I did involved trans service/ repair. I've rebuilt a few in my day and have seen the damage that occurs to your clutch packs when you don't change your fluid. I personally don't recommend flushing as a normal part of service, but I feel at around 90,000 miles it can't hurt either. I think trucks should come equipped with trans temp gauges, just like your engine has.
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I work at a dealership and we do both drain and fills and use a flush machine and never had a problem with either....its all on how much money you want to spend...every 30k its sugg to replace to replace all fluids on most jap cars...
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most of the newer trucks in the last 3-4 years have transmission temp warnings on them...not a gauge but an idiot light.
judging by where you live only, i am assuming you took your truck to rairdons. i used to work for him and the service writers would make an extra couple hundred bucks a month just off of keeping the chemical bottle caps from the flush companies. if you were a tech you probably know how this works. i had a fellow service writer at a different dealership that made a grand one month just on spiffs for selling flushes.