So I haven't seen this thread up yet, and well I I didn't search either but here it goes.

I'm curious as to what oil you guys are using and why, and what weight.

Ok I will start, I used to use catrol gtx always but they aren't putting the zinc additives in it that help protect bearings, so I am switching to kendall gt1 I was told Wal-Mart super tech is made by kendall also.

I'm using 10-40 in my b16 and 5-30 in the k20

Whos next?