I have a motor oil leak on a 1991 Chevrolet S10 pickup, 2WD, 2.8L, manual transmission.
The leak is around the bell housing area. The oil covers the bell housing and the transmission.
I think it is either the rear main seal or the back of the oil pan gasket. But how can I know for sure? It is difficult to see the back of the oil pan.
Would the oil INSIDE the bell housing be proof positive that it is the rear main seal? I have not looked inside yet.