thekirkwood
Cadet
- Joined
- Aug 7, 2010
- Messages
- 7
Hi All
Boat newbie so please excuse ignorance.
I have recently acquired a mercruiser 165 from 1975.
It has fairly new riser and manifold by the looks of it.
First time I ran it on bellows it ran fine once I got it going. On completion the oil also looked fine.
Second time it ran, again on bellows, I checked the oil again. This time the oil was milky. Two oil changes later, also with a filter change, the oil appears to be almost clear again. No idea where the water came from or why it has stopped coming! Ran engine for about 20 mins, reached about 140 degrees and remained steady.
The engine has heat exchanger and is freshwater cooled. Appears to have antifreeze which doesnt contain oil and looks pretty clean.
I live on the coast and don't get very cold temperatures during the winter. Not sure if boat was winterised at all. However I guess block should be reasonably protected with antifreeze?!?!? Is it possible to get damage to the block from any residual water left in the manifold & riser if not drained properly/at all?
Any help/advice would be appreciated. Might just be one of those wierd things but the water must have come from somewhere.
Thanks in advance
Iain
Boat newbie so please excuse ignorance.
I have recently acquired a mercruiser 165 from 1975.
It has fairly new riser and manifold by the looks of it.
First time I ran it on bellows it ran fine once I got it going. On completion the oil also looked fine.
Second time it ran, again on bellows, I checked the oil again. This time the oil was milky. Two oil changes later, also with a filter change, the oil appears to be almost clear again. No idea where the water came from or why it has stopped coming! Ran engine for about 20 mins, reached about 140 degrees and remained steady.
The engine has heat exchanger and is freshwater cooled. Appears to have antifreeze which doesnt contain oil and looks pretty clean.
I live on the coast and don't get very cold temperatures during the winter. Not sure if boat was winterised at all. However I guess block should be reasonably protected with antifreeze?!?!? Is it possible to get damage to the block from any residual water left in the manifold & riser if not drained properly/at all?
Any help/advice would be appreciated. Might just be one of those wierd things but the water must have come from somewhere.
Thanks in advance
Iain
