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Originally Posted by JCL
I thought it was a maintenance strategy thread.
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I thought it was about religion.
Quote:
Originally Posted by JCL
Getrag? Automatics in this thread, not manuals.
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My bad, typing too fast.
Quote:
Originally Posted by JCL
When you run a used oil analysis, what will you check for? Some additives can be detected, but the friction characteristics will be a tough one, and those additives are critical.
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Not sure what you mean.
If a UOA shows low contamination, viscosity in range are you saying "the friction modifiers may still be depleted"????
Or are you saying 'the fluid may be contaminated, and the viscosity low, but since the friction modifiers MIGHT still be OK it should go another 40,000 miles'??
I don't understand why a UOA not picking up friction modifiers (I'll take your word on this) means that UOAs cannot be useful to quantify ATF life.
Sounds like your recommendation is 'since UOAs might not pick up friction modifiers, lets stick with 100k intervals...and once you get to 100k, if nothing is slipping, better not mess with it.'
A
PS You must agree that maintenance strategies are statistically based...so not insurance. Indeed I think it was you that brought up the issue of balancing the risk of failure due to fluid/lubrication issues against the likelihood of sensor/electronic failures.