73shark said: My M20 4 speed has both a drain and a fill plug. As to the front leaks, it could be the rear main seal in the engine is leaking. As to the type of lube for the transmission, I believe you can find it in the back of the owner's manual. I'm currently out of town and can't check mine.
From a bit of research, 69 M20 had no drain plug, the boss is there to allow the drain plug to be drilled and threaded. This is why I think I will have to use to hand pump to drain and refill through the fill plug.
I have replaced the rear main and oil pan gasket, there is a bit of oil on a couple of the oil pan bolts but nothing significant, might just need a re-torque. The rear main area doesn't seem like it leaking when I swabbed it.
The bell housing cover is dry also inside and out.
I did try to remove the fill plug with a spanner but it wouldn't move.....I will have to order a 8 point socket and give it a go.
|UPDATED|10/21/2018 2:00:43 PM (AZT)|/UPDATED|