mkirsch wrote:
So again, since the manufacturer of the car is either clueless or has an ulterior motive depending on who you ask, how do you come up with the intervals?
If you are still changing your engine oil on the old 3000 mile schedule, don't forget, that was the MANUFACTURER RECOMMENDED interval. So now you're a hypocrite, or something has changed in the intentions/behaviors of car manufacturers.
This forum is full of people who are convinced that the manufacturers who design these things either know nothing about them, or they are liars who want you to wear out your equipment early and/or spend extra cash on unneeded service.