Diesel or race oils are not the answer for old flat- tappet motors.
Diesel Oil
Racing Oil
I distribute
ZDDPlus and use it exclusively in all of my flat-tappet motors. If you are in need, I offer a SYC member discount that will get the product to you at a savings. I can be contacted via P.M. or e-mail at <u> <font color="blue">
[email protected]</font> </u> .