by spencerdiesel » Sat Mar 12, 2016 1:32 pm
I hadn't given it thought until the past couple days, but I'd add some Moly and/or zinc additive if running conventional motor oil. Modern emissions compliant engine oils have little to no zinc. Only reason being that zinc is a suitable substance to prevent wear on sliding surfaces.
That's why a lot of 12v guys with heavier than stock valve spring run zinc additives in their crankcase oil, there's a lot more seat pressure with stronger springs, and we have flat tappet cams.
Anyway, zinc is good for sliding surface application; and that what gear teeth do as they mesh in and out.
1992 W250, 5 speed, 4.10, Ext. cab Ext. bed, 12.5k winch, 75 gal. fuel tank
H1C/18
Fuel: Power Driven Stage 2 sticks, THD 12 psi piston pump, THD fuel pin, 366 spring, fuel screw 1 turn in, timing to the head/ >1/4”
Muffler delete