zagger
Well-known member
My 99 vert just rolled over 80k and its time to change the oil. The manual recomends Mobil 1 5/30 which is the same oil I used when the car was new and engine was tight, Now with some weare I'm sure most tolerances have loosened up and I'm curious if the same oil is still the best for the motor. I've heard of Royal Purple oil, is it realy better, has anyone used it and did they noticed any differance. Maybe I should stick to Mobil and just get havier grade like 10/30 or 15/40. Whonder what most of you are runing in your vetts and how it performs.