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Ask Dominick Your Own Question
Dominick, Marine Mechanic
Category: Boat
Satisfied Customers: 1009
Experience:  25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified
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Where is the oil drain plug located on 5.0 ltr have oil

Customer Question

where is the oil drain plug located on 5.0 ltr
have oil coming out of drain plug in hull , cant` see any oil leaks ,was down 2.5 ltrs of oil when checking dip stick, no visible signs of oil leaking from engine
Submitted: 1 year ago.
Category: Boat
Expert:  Jeff G. replied 1 year ago.

Oil drain is on the oil pan on the bottom of the engine. The usual culprits are a leaking oil pan or even rust through or a leaking rear seal. If you look over the back of the engine you should see if it is the rear seal. A small rust hole can be anywhere in the pan. A bright light and mirror is the only way to find the leak without a dye in the oil and a UV light.

What engine do you have?

Customer: replied 1 year ago.
5.o ltr mercrusier
Customer: replied 1 year ago.
noticed oil coming out a few weeks ago , but has got worse , have had my hand under engine but cant` find any oil drips or oil on my hand , had mirror and small light can`t see any leaks or drips
Expert:  Jeff G. replied 1 year ago.

Try this. Get some butchers paper or large sheet of white craft paper. Make sure the bilge is clean and dry. Put the paper under the engine. Run the engine on a flushing devise. Run until the engine warms up. Shut down the engine. Remove the paper and see where the oil drips are. It should pinpoint where the leak is.

Post back what you find.

Check carefully back by the flywheel housing and cover. Your seal can leak into the housing and you won't see a leak.

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