First it was the 3month/3000 mile oil change. Then miles were pushed, and pushed even more with synthetic oil. A lot of oil change places still stick to 3 months, some auto or oil manufacturers say 6 months, synthetic says a year. I have found this article by Amsoil: http://www.amsoil.com/newsstand/motor-oil/articles/why-is-there-a-time-limit-on-motor-oil/
I seen numerous sources say the same thing, but no one has proof to show this actually happening. As anyone done UOA's on low use oils to know that the oil needs changing after a said amount of time?
I seen numerous sources say the same thing, but no one has proof to show this actually happening. As anyone done UOA's on low use oils to know that the oil needs changing after a said amount of time?