Hi guys! Will a synthetic 10W40 HDEO (Shell Rimula R6M/R6LM) with a viscosity index of 153 be more shear stable than the mineral 15w40 counterpart (Shell Rimula R4X) with a viscosity index of 139?
Are there any other benefits of running the synthetic version other than cold start, resistance to thinning at higher temps, and longer drain intervals? (Ambient temps ranges from 26-33 celcius/80-95 fahrenheit, summer all the time)
Lastly, which one of the oils do you think is better for lots of stop/go riding? There are lots of traffic lights (80-90% City), will synthetics last longer/protect better than minerals for these conditions? Or will it be better to use mineral and change it more frequently?
Are there any other benefits of running the synthetic version other than cold start, resistance to thinning at higher temps, and longer drain intervals? (Ambient temps ranges from 26-33 celcius/80-95 fahrenheit, summer all the time)
Lastly, which one of the oils do you think is better for lots of stop/go riding? There are lots of traffic lights (80-90% City), will synthetics last longer/protect better than minerals for these conditions? Or will it be better to use mineral and change it more frequently?