Watch out for the newest generation Rotella T oils, already on the shelves in some stores!
They DO NOT have sufficient ZDDP levels any longer!
Make sure you get a rating earlier than the new CJ ratings.
My local part stores still carries the earlier CF rating on the shelves.
(the second letter shows the generation A,B,C,D,.... J is the newest and no longer has ZDDP)
I use Rotella T SAE40 all summer for the long hot freeway trips and SAE30 the rest of the year.
You can start easily with SAE30 around the freezing point - especially with older engines.
