Switching Brands

[Klutch9]

I think I remember years ago on BITOG there were a few discussions about how switching brands could be bad. The theory was Brand A had a certain additive package and Brand B had a completely different additive package. When switching there was a period of time with higher wear when the old ad pac was removed from the parts of the engine and the new ad pac was taking effect.

I don't think there was any proof but it was more of an exercise in theory. Does anyone remember this?

I do. However, it’s also been put forth that wear will always happen early into an OCI, regardless of if you’re using the same oil or not, since the detergents in the new oil will clear away the old AW additives that then reapply themselves. Something like that at least.

 

[nomas]

"Do you really want to find out?"

Sure, but I'll bet nobody can actually tell you . Speculate , yes .