Range Rover Mark II / P38
I changed most of the fluids on my 97 RR, but since I changed the oil, Mobile 1 filter w/ drainback valve, I am having
tappet or rattling of lifters for a couple seconds after cold start. I used 10-40 Valvoline durablend (50syn 50 reg). Anyone recommend
just going back to castrol gtx 20-50 or...