quattroworld

I've always subscribed to thinner better oil. I ran 0w20 in my B5S4 all the time, zero issues, great blackstone results.

Now it's time for my first change in the TTRS. The brand I use doesn't make a 5w40. It seems so thick... I don't really want to run generic Castroil.

I realize asking what oil to use is one of the worst questions to ask in forum history. But.... Any good links to some data or reccomendations.

I'm in Nor-Cal so it gets hot. Street driven, no track at this time.