....Zippy I used the green GT-1 in the past,even years ago ran outside the box used Rotella 15-40 but the new stuff (T5) isn't as good as the CJ4 they had to change it for for the new tier of diesel engines with converters and exhaust fluid....
Autozone recently blew out the last of the CJ4 Rotella T5 in 10w30, and put them on clearance, they were selling 2.5 gallon jugs for $15. Not sure if there is any left in their system as us clearance sale watchers gobbled up quite a bit of it.
I'm not going to admit how much I bought, but it was definitely enough to keep me going for awhile
Nice thing about it is it is dual rated, so no remorse using it in late model gas engines or older flat tappet stuff. It seems the closest thing to "all purpose" out there.
