Rotella is CJ-4 oil now too and has been for a couple years along with Del-vac and all the others. All of the CI-4 oil was bought up very quickly by the diesel truck guys in store cleanout lots when the standard was changed. Every one of us diesel guys constantly check out oil in the stores to see if we can find CI-4 so you won't see it in the common stores. I use Lucas in both the streetrod and the Cummins.

STOP BUYING UP OUR DIESEL OIL FOR YOUR HOT RODS. We need it for our trucks. There is no advantage to running 15-40 in a streetrod. 10-30 or 10-40 works just fine unless you are loose as a goose. Just add any ZDDP additive.