Like the title says im puling my hair our...i have a twin engine formula with an oil leak i cant find...what are the spots to check.? Its a twin engine formula and the motors are tough to work on...it doesnt lose any oil after it sits forma week, then i drive it for a hard half hour and there is oil in the bilgr...its not alot but enough to be concerned... Anyone have a list of spots to kcheck that are common...engine is a 1989. 7.4 330. Motors are squeezed into a 272

Do you even have a vicinity where it's coming from, front, back, port, starboard side of engine?

Unfortunalty no...the motors are so squeezed together that without removing exhaust i cant see...not from intale manofld i know that...and doent seem lime from remote oil filter

Just found one in mine a couple weeks ago I've been chasing, it was one of the high reassure hose to the oil cooler... Leaking out of the crimped connection

Engine oil or drive oil? Thought I had an engine oil leak on an old boat, turned out there was a leak in the bottom of drive oil reservoir. Only leaked after a long run.

That is the first place I would look -- did you notice a color of the oil - is it possible that its the drive oil?

3pointstar

Maybe a dry or cracked oil breather grommet.

Put some oil dye in the engine and drive it. It comes in 1 Oz. bottles. After a hard run you should be able to see where it's coming from. It's about the only way to find the exact source of the leak.

Its def engine oil. After a hard hour run its down an 1/8th on the dipstick....i will remove port exhaust and check cooler. Imwill look for dye as well guys...thanks for the help. Its suck a simple thing , u would think it would be easy...been wrenching my whole life. I just cant get down there..

I found the leak but have no idea why or how its leaking there...down between the valve cover and the exhaust manifiold...it appears to be coming from a head bolt...right side 2nd from front. Any ideas?