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Old 02-09-2012, 03:25 PM
Godawgs313 Godawgs313 is offline
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Oil

When I had my boat serviced in the fall, the local shop put regular oil in. I have been using synthetic oil for about three years. Was thinking about just dumping it and putting synthetic back in, but I will have to start it to get the engine warm. Any advice, just run the regular,change it once or possible twice? Anyone have any feedback.

1995 prostar lt 1 engine
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Old 02-09-2012, 03:43 PM
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Double D Double D is offline
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Dumb question, but cant you just pull the plug and let it drain? It might take all night but it will come out. And even if you do have to run it, just drain the old, replace the filter, and put in the new. Standard oil change right? What am I missing?
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Old 02-09-2012, 03:54 PM
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93Prostar190 93Prostar190 is offline
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I am a synthetic freak .... in cars, boats, etc .... but ....

fresh oil is good ... run the oil they put in while it is fresh and 25 hours from or so switch back ... no big deal ... as long as they use fresh oil you trust. save a few $$ the compatibility is there ...

If you want to change it now .... go ahead and do the slow drain like Double D states .... it has worked for me.

Peace.
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Old 02-09-2012, 04:00 PM
Godawgs313 Godawgs313 is offline
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Maybe dumb, but u wasted your time to read and reply! Really just wondering what people' s thoughts were on just running regular after running synthetic and if I do change it should I do it twice no way to get all of the old out with just one change.
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Old 02-09-2012, 04:07 PM
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Me personally (no real experience with boats, but quite familiar with engines) I would run the conventional oil for an oil change and then switch back to your favorite synthetic oil. No harm will be encountered for one oil change with the conventional oil after running the synthetic. They can be mixed together just fine, hence some "Synthetic Blends" that some companies sell.

You could always just run it to half your typical oil change interval if you are concerned by it. No need to waste fresh oil though.

Last edited by Stx221; 02-09-2012 at 04:11 PM.
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Old 02-09-2012, 04:08 PM
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CantRepeat CantRepeat is online now
 
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Quote:
Originally Posted by Godawgs313 View Post
Maybe dumb, but u wasted your time to read and reply! Really just wondering what people' s thoughts were on just running regular after running synthetic and if I do change it should I do it twice no way to get all of the old out with just one change.
Then you should have ask this question and not the one in the OP.

Oil and Oil mix. It's not like oil and water. You wont hurt anything by going back to dino oil.

And it seems you have taken offense to DDs "dumb question" remark. He was not saying your question was dumb, he was referring to himself and asking a dumb question. In general, you will not get sharted on at TT. Most everyone here just wants to help.
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Old 02-09-2012, 04:12 PM
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j.mccreight@hotmail.com j.mccreight@hotmail.com is online now
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There is no harm in running regular oil after synthetic has been used, at 50 hour mark just change as usual. changing the oil twice is just wasteful but if you can't sleep because regular oil was used then by all means its your pocket book change the oil as many times as you want...
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Old 02-09-2012, 04:25 PM
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Quote:
Originally Posted by j.mccreight@hotmail.com View Post
There is no harm in running regular oil after synthetic has been used, at 50 hour mark just change as usual. changing the oil twice is just wasteful but if you can't sleep because regular oil was used then by all means its your pocket book change the oil as many times as you want...
+1 on J.Mc's advice...it all depends how deep your MC OCD is...
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Old 02-09-2012, 06:31 PM
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Jerseydave Jerseydave is offline
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Drain it, re-use it in your lawn mower, tractor, snow blower, etc.

1 quart will still be in the filter, no harm no foul.
Add your synthetic oil and ski! (or barefoot)










And get some sleep!
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  #10  
Old 02-09-2012, 07:16 PM
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Quote:
Originally Posted by CantRepeat View Post
Then you should have ask this question and not the one in the OP.

Oil and Oil mix. It's not like oil and water. You wont hurt anything by going back to dino oil.

And it seems you have taken offense to DDs "dumb question" remark. He was not saying your question was dumb, he was referring to himself and asking a dumb question. In general, you will not get sharted on at TT. Most everyone here just wants to help.
At least someone understood what I was trying to say. My punctuation is correct, right?
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"In my many years I have come to a conclusion that one useless man is a shame, two is a law firm and three or more is a congress." - John Adams
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