Only a part of equation. I dont claim to test oil etc.As soon as his oil turns black he changes it, good science
The initial point is being more interactive. Going high on miles could reduce mpg, and apparently is taking place for ppl. Tight clearance in the modern motors reduced coagulation of sludge, but reduction of mpg and negative effects on motor still possible. I am not a motor head.
Misquote. I think.What else would you expect from a scientist?
LoLThe bestest most greatest scientist around