Why is it so hard for me?

[ford38v8]

Originally Posted by GB SISSON

I'm still trying to figure out what's so wrong about putting a metric drain plug into an SAE oil pan.... My dad use to say "Gary, a crossed thread is a Tight Thread". But maybe that was just for fasteners.

Gary, As it turns out, a ½"-20 bung had accepted an M12 x .175, and hadn't leaked oil. This was on a 1995 Brand X van when I bought it. When I changed the oil, it stripped out and I discovered the problem. Those pans came in both variations in those days! I put in the correct ½"-20 and all was good for many years...Now how did I remember that and forgot what I had for breakfast?