High milage vehicles

[Buzz2401]

Chain.  The people who did oil analysis suggested extending my oil changes based on amount of additive left in oil

[Jonathan_S]

I have a Toyota with 290000 just got a oil analysis done. Oil had 5000 miles on it.  I use vavline high mileage.  They said oil had a ton of life left and that motor had no sign of wear.  Gonna start doing 10k oil changes now and see what oil looks like

Why?   

Why get more life out of an oil change? Is that what your asking? If I did an analysis and all looked good at 5k i'd try 7500 on the next one, not sure I'd jump up to 10k first though.

7500 sounds reasonable.  Huge difference after 5000 in my experiences. 

[UBA]

I think I would stick with 5000. But I prefer the safe side of things.

[Jonathan_S]

  when you start losing compression then it's nice to not have regrets on maintenance.

[Stein]

I generally do 3k unless the oil looks good at that point.  Black and stinky gets changed.  Most of the time it is black and stinky and I don't mind the $16 or $17 it costs to change the oil and filter.

[syoungs]

how much does the oil analysis cost?

[Buzz2401]

$25 to $35 depending on whether you want a additive analysis which tells how your oil its self is doing.  For $25 they just tell you what they find in oil as far as metals, coolant and other contaminants.