Originally Posted By: Shannow
No, some are saying spring, some are saying fall
It's kind of like the chicken / egg paradox. I would change it in the Spring to remove contaminants from Condensation / cold start blow by etc. from the winter. There is also an argument for the Fall change, to have fresh oil to fight the harsh Winter. The thinking would be that in the Spring and Summer, the oil would burn off those contaminants.
I can't figure which sounds best to me.
That is why I change mine once in the Spring (Motorcraft syn blend) and once in the Fall (Kendall full syn). If I put on additional miles in the summer because of vacations requiring a cartop carrier, I do a 3,000 mi OCI with Motorcract Syn blend as soon as I get back from the trip.
Good luck in whichever you choose.