Alumarine
Captain
- Joined
- Feb 22, 2005
- Messages
- 3,684
Just picked up a 1980 Sylvan 18' aluminum with a mercuiser 140hp serial 566xxxx.
Last week I changed the oil and filter (short filter) and put in 3.8 liters (approx 4 us quarts).
I checked it after 5 minutes and it was low.
I checked it an hour later and it was at the full mark.
Today I ran it for about 20 minutes on muffs, shut it down and checked it after 20 minutes.
It showed I was down about 2/3 of a quart.
I checked it after sitting for 40 minutes and it was right up to the full mark.
I've never had this issue with any motor before.
I put a level on the valve cover and have been checking it when it shows level if that helps.
Any idea what's going on?
Runs great btw. Compression is 150-152 on all 4.
thanks
Last week I changed the oil and filter (short filter) and put in 3.8 liters (approx 4 us quarts).
I checked it after 5 minutes and it was low.
I checked it an hour later and it was at the full mark.
Today I ran it for about 20 minutes on muffs, shut it down and checked it after 20 minutes.
It showed I was down about 2/3 of a quart.
I checked it after sitting for 40 minutes and it was right up to the full mark.
I've never had this issue with any motor before.
I put a level on the valve cover and have been checking it when it shows level if that helps.
Any idea what's going on?
Runs great btw. Compression is 150-152 on all 4.
thanks