- Jul 11, 2014
- Paradise of Florida
The 5w40 and 15w40 will work well. Noticed my mower bog down a little with the 40 grade, but the tractor seemed quieter. Self propelled doesn't have enough power to keep up with my pace. Seems to run stronger 30 grade. The tractor seems to be grade immune and why I listed the Ford Powerstroke specs(API doesn't protect as well as Ford specs).
Get an IR temp gun and measure head temps in several places after mower/generator/tractor.... has been worked. Record the data. I got cooler temps with certain oils. And, the IR gun is why I won't use PCMO. SP/GF6 was a game changer too and I should test it. But, won't bother since the 4-cycle, non-API, and HDEO oils are just doing great.