Yes more oil and many many more hrs. and heat cycles between changes. Piston wobble plate pump to produce pressure then ram effect with the injector. Head and cylinder are they not coolers?? Sure not efficient but still coolers. I bet temps are very close and I elevated my water and oil temps on top of that. Another benifet of diesel oil is anti-foaming additives. Buying cheap oil and changing after a ride is better than not changing oil often. Synethic oil any make will last longer than dyno oils, go 2/3 longer for the same $$ but less work. I run Asmoil in my motor and Rotella in the gear side of the CRF150RB. I run Asmoil because I get 20w-50 $9 qt. otd vs. $15+ for other HP synethic oil. I feel Asmoil is too slippery for the clutch and Rekluse reccomends Rotella. Asmoil is in my Husky and Rotella in all the others.