What Otto said, plus the pushrod cover. Look at the very back lower corner of the cover, just above the starter. Take a can of brake cleaner or like, spray and wipe the area clean then keep an eye on it. Jon G pointed me in that direction recently and a leak there was responsible for a lot of what I was calling a rear main leak.

Good Luck,

RonR


RonR


1951 3600 with Clark flatbed, T5, 4.10 rear
1970 340 Duster
1990 5.0 V8 Miata (1990 Mustang Gt Drivetrain)
1964 CJ5