I called Blackstone Laboratories today and got a lot of hmming and hawing about my last oil analysis. I think what Spooler said is probably the best course of action at this point. I'm still going to do the hot engine check later this week. Thanks for all input.

L8r,.........dogger

 

I performed the cooling system pressure test at operating temperature with vague results. I brought the engine temperature up to normal operating range and left the engine running. I pressured up the cooling system to 16.5 PSI and left it for 10 minutes. During that time the pressure was cyclic dropping about 1 PSI and rising about 2 PSI from the initial pressure a couple of times.

I bled the pressure off and removed the tester and the coolant level was down about 1/4" but just in the filler neck of the radiator. This could have been due to a small amount of coolant flowing out the overflow hose into the overflow reservoir when I released the pressure. Ultimately I have determined that I do not have a coolant leak into the engine oil but am still concerned about the analysis from Blackstone Laboratories. Any thoughts?

L8r,.......dogger