Hi can anyone shed any light??
A friend of mine ran tractor hydraulic fluid (Hytran, Hygaurd) in his steering clutches. He said it steered lots better that way. When I get around to fixing my two ton, I’ll likely run straight 40 wt Delo 100 in the engine, same as my Sixty.
BP.
I have a lot of old engines( not all cat) from 1896 up, I use 30wt d in everything, never had any oil problems.Oil didn't change much until WW2, 30 wt was the most common ..WA7OPY