The VR1 synthetic has the ZDDP in it, just like the conventional oil. So, why do you recommend conventional oil? just trying to learn as much as possible.
that is what i have used on mt ft 340 15000 miles and my 426 stroker if i can't get vr-1 synthetic i use royal purple xr-1 10-40 never had problem with either oils don't think i burn a quart during a season 5 to 7 thousand miles
