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Oil Change Question

Old 11-23-2020, 05:17 AM
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Hey guys. Quick question.

We put maybe 25 hours on our boat this season. We had a new baby and didnít get out much this year. Curious as to how long (days/years not hours) you would let a boat go before getting an oil change? I had the fluids changed about this same time last year, and I donít want to waste the time and money if it doesnít need to be done. Thanks
Old 11-23-2020, 05:27 AM
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Are you still going to use it?
Going into storage?
Old 11-23-2020, 05:28 AM
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If I donít hit 100hrs first, I do it every year.
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Old 11-23-2020, 05:31 AM
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Originally Posted by c_m_25 View Post
Hey guys. Quick question.

We put maybe 25 hours on our boat this season. We had a new baby and didnít get out much this year. Curious as to how long (days/years not hours) you would let a boat go before getting an oil change? I had the fluids changed about this same time last year, and I donít want to waste the time and money if it doesnít need to be done. Thanks
I think youíre looking at it the wrong way. The annualised cost of doing an oil change is pretty small and is one of the best preventive tasks you can do to prolong the life of your engine. Iíd do it annually if usage doesnít force it sooner.
Old 11-23-2020, 05:32 AM
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Originally Posted by patrick81 View Post
If I donít hit 100hrs first, I do it every year.
Yeah, thatís what I was thinking too. Guess Iím going to have to gather up some energy and pull the boat. Babies tend to sap all the energy it seems...
Old 11-23-2020, 06:41 AM
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I do the same.

Change every year unless hours dictate more frequent.
Old 11-23-2020, 06:48 AM
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Somebody else on this board had a great quote on this so I'm going to steal it.

If you have a boat, you have 2 choices. You can do preventative maintenance, or you can do repairs. Your choice.

Old 11-23-2020, 06:53 AM
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The "do it every season" answers are the correct answers. However, if you only have 25 hours on the oil, and you DON'T do it this season, I promise you that you and your engine will not know the difference (unless there are other issues and you have a lot of fuel or other nastiness in your oil after only 25 hours, which is part of the point of changing it every season).

When I was in your shoes with low hours due to infant kids, I did let the oil (and lower unit lube) go for more than one season and I never knew the difference.

(Flame suit on).
Old 11-23-2020, 06:59 AM
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It's good for engine to go into winter storage with fresh oil.

These outboards run cool and there is a chance that oil has some moisture in it.

If boat runs year round, then less of a concern.
Old 11-23-2020, 07:20 AM
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I usually wait until I get 50hrs on my main, but I do get to run mine year round most winters. My kicker absorbs the bulk of the hours used and gets periodic oil changes. The 50hrs might take me 2 seasons on the main and all lakes here cap. We have one lake that will cap but only for a short period because of it large size which allows me to run my boat. The small amount of funds is no big deal to me. Preventive maintenance is important to me as I have done this all of my life and it was part of my job working Air Force heavies & fighters.
Old 11-23-2020, 09:00 AM
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Are you asking about engine oil (4 stroke) or lower unit?

I would recommend changing lower unit oil to at least inspect for possible water intrusion before putting it away for the winter. Engine oil - nah...you're fine

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