Valvoline VR-1 vs. Lucas Hot Rod oil

Mattax said

The current generation of T4 diesel oils would be OK for a car with stock spring pressures with or without cat.

2018 Rotella T4 15W-40 PETROLEUM QUALITY INSTITUTE OF AMERICA TEST PROGRAM

2017 Rotella T4 10W-30 Rotella t4 10w30

Zddp now seems to be just under 1000 ppm for most.

Click to expand...

I shoudl have been more explicit: I was figuring the T4 10W30, which I think is what Dartfreak is heading for. That is showing 1100 ppm zinc in your links. Tnx.

He still needs to only add half a bottle of the additive if it is like most additives. Dartfreak, what additive do you have?