Snowman9000 wrote:
I read the whole thread and if I missed this, I apologize.
Let's say there is a drain interval of 150,000 miles or 48 months, whichever comes first. Or 50,000/48, whatever.
And let's say in 48 months the vehicle is actually only driven 20,000 miles. I understand that sampling and testing can be employed to extend the drain interval. But...
What is the reasoning behind specifying a calendar time? What happens to the fluid as it sits in the transmission in a low mileage situation? ie How does it go bad?
Thanks!
It could get contaminated with water but that's about it. The fluid won't go bad (from a performance standpoint) by just sitting. I never believed in the calendar time limit but got voted down on this. The fluid if just left to sit and without contamination should be good for 10 years or more.
