440 Superbee· Premium Member
Challenger SRT Hellcat
There is a post on here from either Challengerdad or HellCatdotClub that received technical data from the manufacturer of Royal Purple. Current recommendation is to not run Royal Purple until after 2000 miles has crossed.I believe the factory uses a Pennzoil product, even has SRT on the bottle. Mobil is good also Royal Purple. My car has been sitting only 70 miles so far but I will check the oil soon thanks for the tip!