/\ that is not the first case of 300V not performing well on our car driven daily. An oil built for racing doesn’t mean it will perform on the street where temp can go from -10F-100F. By the way I switched to Rotella T Synth 5w40 and I love it. Better result vs M1 0W40 which is not bad to begin with.

 

I am using Amsoil signature series 0w-30. Have never done a oil analsis but i have only used it for 10k now. I guess i should get one done.