Patman
Staff member
After seeing Trevor's recent GTX analysis on here, at 3000 miles, I would say that GTX could probably handle 5k intervals, although it obviously would need to be monitored through oil analysis.
His oxidation and nitration levels were very low, and the TBN was still at 5, so that's not too bad either. The viscosity was still holding strong too.
I honestly think that any SL dino oil can go 5k, at least in a well tuned engine, unless the driving habits are very extreme.
His oxidation and nitration levels were very low, and the TBN was still at 5, so that's not too bad either. The viscosity was still holding strong too.
I honestly think that any SL dino oil can go 5k, at least in a well tuned engine, unless the driving habits are very extreme.