Post by: Encore 280 on October 03, 2016, 10:38:35 AM
Post by: pianoman9701 on October 03, 2016, 10:41:47 AM
Post by: Woodchuck on October 03, 2016, 10:46:42 AM
Post by: spoonman on October 03, 2016, 10:49:21 AM
Post by: Dale Gribble on October 03, 2016, 10:56:47 AM
Post by: Rick on October 03, 2016, 11:03:13 AM
The Duramax has proven to be very easy on oil. Run an appropriate conventional oil, follow the OLM and the engine will last longer than you'll probably want to drive it.
Post by: Encore 280 on October 03, 2016, 11:13:22 AM
Post by: HntnFsh on October 03, 2016, 08:41:40 PM
Post by: jmscon on October 03, 2016, 08:48:43 PM
Post by: huntnphool on October 03, 2016, 08:59:43 PM
That being said, my MDX gets Mobil 1 and so does my boat engine.
Post by: follow maggie on October 07, 2016, 07:38:12 PM
Post by: JohnVH on October 15, 2016, 10:05:13 AM
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Post by: highside74 on October 15, 2016, 11:13:29 AM
I run delvac 1300 in mine. It's also excellent oil. I wouldn't run synthetic in a duramax myself. Not worth it.
Mobil Delvac 1300 is great oil. Many manufacturers in the big rig indusrty use Delvac now.
Post by: jackelope on October 15, 2016, 11:57:36 AM
Unless you're going to run extended oil change intervals,or live in the arctic don't waste your money on synthetic.
The Duramax has proven to be very easy on oil. Run an appropriate conventional oil, follow the OLM and the engine will last longer than you'll probably want to drive it.
I agree with Rick. Synthetic is overrated. Even with the extended interval theory, the oil is still getting dirty, especially in a diesel. I see no point in running Mobil 1 unless you're under extreme duty conditions with your truck.
Post by: jackelope on October 15, 2016, 12:01:15 PM
Post by: huntnphool on October 15, 2016, 12:24:27 PM
Not entirely sure if there's any logic in this, but I've always been told to wait until there's 10k miles on the engine before switching to synthetic.
I've heard guys talking that say just the opposite, don't change to synthetic if you have used regular oil up to 10k. :chuckle:
Post by: b23 on October 15, 2016, 12:28:59 PM
Not entirely sure if there's any logic in this, but I've always been told to wait until there's 10k miles on the engine before switching to synthetic.
The theory behind it was Synthetic oil didn't allow all the parts and pieces to get "broken in" properly. Race engine builders will run a new motor on their dyno and use special "break in" oil to achieve the same thing.
I'm a big fan of Royal Purple and that's all I use in my gas motors but when I still had a diesel I used nothing but Valvoline Premium Blue. If I had a diesel pickup now, Premium Blue is what it would get.
Post by: jackelope on October 17, 2016, 07:27:59 AM
Not entirely sure if there's any logic in this, but I've always been told to wait until there's 10k miles on the engine before switching to synthetic.
The theory behind it was Synthetic oil didn't allow all the parts and pieces to get "broken in" properly. Race engine builders will run a new motor on their dyno and use special "break in" oil to achieve the same thing.
I'm a big fan of Royal Purple and that's all I use in my gas motors but when I still had a diesel I used nothing but Valvoline Premium Blue. If I had a diesel pickup now, Premium Blue is what it would get.
The part about not breaking in properly is what I've heard.
Post by: Sumpnneedskillin on October 17, 2016, 07:42:46 AM
Post by: jackelope on October 17, 2016, 09:21:11 AM
Post by: coachcw on October 17, 2016, 10:08:39 AM
Post by: swift on October 19, 2016, 06:31:56 AM
Anybody use Mobil 1 in their diesel rig? I bought a Dura Max a couple months ago and it's time for an oil change. I noticed on the Mobil 1 container that it's for gasoline engines and it doesn't have the letter designation for diesel engines. Any help is appreciated, thanks.
Delvac 1300 or delo both are great oils flip a coin
Post by: scotsman on October 20, 2016, 07:27:10 PM