Oil changes with synthetic
How often do you change your oil if you use full synthetic oil? We have a Chevy 6.0 gasoline engine. We are putting Mobil 1 synthetic oil into it and are finding differing requirements. Some say g...
Forum Discussion
Groover wrote:
The bottom line is that oil will essentially last forever unless it gets contaminated or overheated. I sincerely doubt that he is overheating it. The main source of contamination is cold starts that allow more blowby of unburned fuel and exhaust gases which contain carbon and water. The problem is compounded if you don't get the engine hot enough to boil out the water. If the car sits in a garage without being driven the oil will last a very long time. Just watch the short trips and temperature cycling.
I have noticed that time spent on a dealer lot does not seem to count towards oil changes. At least that is what the dealer told me when I bought a truck that had been on the lot for 7 months.
Oil is contaminated on the first start. It also gets heated all the time. Doesn’t need to get overheated to fail. Even run at proper temp oil still breaks down!
