[DAVID GAGNARD]

King;

I've been told to use gas-kerosene-diesel fuel and even WD-40. I put my heads on V stand combustion chamber down and put fluid into the intake ports and completely cover the valve head to check for leaks.... One shop told me on a standard non-high performance rebuild one drop every five seconds is the most they accept.... On high performance applications they shoot for no drops and only allow a very little "weepage". Then trun the heads over a little and do the same for the exhaust side....

I usually mark any valves that may show leakage and lap them again and then retest....Usually I use gasoline because I have some around if for no other reason....

David