I know this isn't the norm for this board, but here it goes....
I'm planning to put a 1982 GMC Brigadier tractor back to work. The Mack E7 motors I run use Chevron Delo 400LE 15w40 motor oil, but from what I've read only a straight 40w motor oil is to be used in 6V92's. In the past we have used 15w40 oil in the Detroit 238's and 318's we ran back in the 70's and 80's without a problem. I'm looking for advice/opinions here.
As for my reasoning to putting this truck back to work, well it's just a project that I want to try. I bought two 1982 GMC Brigadiers from the State of NC's Forestry Department with under 70,000 miles apiece. Both have 6v92TA Detroits and are tight, well kept, (both under shelters) and have no rust or damage history. I hope to have one running soon.
James
