Post by
gemman69 »
https://forums.nicoclub.com/gemman69-u191636.html
Sat Aug 30, 2014 7:27 am
I've been running Rotella T 15W40, and I can't see one bit of difference in mileage. 70% of that is highway. I do not try to maximize mileage, I try to minimize time. It's valuable. In cold mornings start up seems to go OK. Also, I use Lucas Oil fuel additive regularly 6 oz/tank. Seems to reduce oil consumption to about 1 qt/800-1000miles. Without it I use a qt/500-600miles.
Back to the Rotella T. My reasoning is since the rings are "loose" tolerance, there is blow by, and the thicker oil gets diluted more slowly than a thinner viscosity oil. Flame away if you like, but it works for me.