Its all Gelbster's fault. He posted this in another thread and I was immediately drawn in.
The apostacy is very strong in this article. We must either convert to the author's oil religion or burn him at the stake.
First, we were always taught NEVER use an oil additive, but the authors data shows that the best results were from oil doused with Prolong.
And, looking through the data, all of our sacred cows for oil choice, Mobil 1 0-40, Castrol 5-40, 5-40 Joe Gibbs, Red Line etc. Don't come even near to the best performing oils in this study.
And the other interesting result of the study is that thinner is better. All the highest ranking oils were 30 wt.
Don't flame me, I'm only the messenger.
SECTION 1 – MOTOR OIL