Well Valvoline is clearly the superior oil, but the difference is probably not significant.
That being said, the fact that Mobil1's idle wear characteristics does not meat minimum standards is disconcerting.
Anyone know if Valvoline Synpower can go for 15k ?
p.s. Yes, I do believe they would honour that warranty, but naturally, its going to be hard to prove. Such warranties imo are gimmicks but are a strong vote of real confidence when it comes from a reputed brand. Or am I kidding myself here?