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oil question Again!
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Author:  sled guy [ Sat Jun 11, 2016 12:27 pm ]
Post subject:  oil question Again!

here's the issue,
last fall my engine ingested water up the exhaust when my tether came off at cruising speed, (1998 sundowner195 4.3 V6) once I realized what happened I needed to get the oil changed ASAP and the small town auto store near where I live did not have any marine grade oil so in a pinch I used Rotella T 15-40 to change my oil 3 times to flush out the milkshake.
I have heard that oil is robust so at the time it was better than using an automotive oil.
I used the boat once since then and put it away.
Now I am getting the boat ready for this year and wondering if I should change the oil now or run it through the fall with that oil in it?
I typically only use the boat to hang out on all day swimming and usually only put on about 15 hours a year.

what would be the best oil to use?
I used to put in Castrol heavy duty 30 weight in my last boat, with this one I have had a marina service it so was using whatever they put in up until last summer.
Thoughts?

Author:  230 Mike [ Sat Jun 11, 2016 3:54 pm ]
Post subject:  Re: oil question Again!

I think you'd be fine with what you've got, assuming all the water is out. But if it'd make you feel better go back to your 30W.

Author:  deafwish [ Sat Jun 11, 2016 5:17 pm ]
Post subject:  Re: oil question Again!

Speaking from experience, if you only used the boat once since the oil fushes, you'll still have condensation in the engine.
I would give it a good run to allow the oil to remove internal corrosion & then do an oil/ filter change again.

Author:  rgoals2win [ Wed Mar 22, 2017 2:19 am ]
Post subject:  Re: oil question Again!

deafwish wrote:
Speaking from experience, if you only used the boat once since the oil fushes, you'll still have condensation in the engine.
I would give it a good run to allow the oil to remove internal corrosion & then do an oil/ filter change again.


This is exactly what I would do, as well. Any chance to ensure water is gone is worth doing...even if it costs a bit more.

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