Is royal purple 5w20 bad for a ranger
Ok my truck had 70k when I switched to castral
edge now its 100k and I just switched to royal
purple now just tonight it was rough starting. Is
royal purple crap oil? Or could I go back to castral
edge? Or I am going to have issues with royal
purple . And how does mobile one compare I'm
just hoping putting RP in want a mistake also
using a mobile 1 filter instead of motorcraft.
Please help. Engine size 2.3 and oil viscosity
5w20