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Over full oil tank FLSTSI?

Softail Models

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Old Oct 4th, 2009, 07:14 PM     #1
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Cool Over full oil tank FLSTSI?

Pondering a puzzlement? I will never over fill the tank and I will always keep the oil at the proper level with that said here are my questions. There are two lines coming out of my oil tank on 2003 Heritage Softtail Springer. These lines are for siphoning the oil out and for returning the oil to the tank. The engine only takes the amount of oil that is needed to lubricate and cool the engine (a preset amount of oil). I know that one is not supposed to over fill the tank. My question is what harm can it do to over fill the tank? The pump only takes out what it puts back and there is always the same amount of oil circulating in the engine regardless of the amount in the tank (as long as there is enough oil in the tank). I know I am wrong somewhere in my thinking but I cannot figure out how it can harm the engine.
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Old Oct 4th, 2009, 07:18 PM     #2
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Re: Over full oil tank FLSTSI?

With an overfull oil tank, the breather in the tank is submerged and the pump cannot scavenge the oil from the engine properly and it ends up coming out the vents into the air filter.
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Old Oct 4th, 2009, 07:51 PM     #3
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Re: Over full oil tank FLSTSI?

and soon as it heats up a bit you may find cap off and oil every were
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Old Oct 4th, 2009, 08:12 PM     #4
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Re: Over full oil tank FLSTSI?

Make that more like launching the cap.
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Old Oct 4th, 2009, 08:21 PM     #5
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Re: Over full oil tank FLSTSI?

Quote:
Originally Posted by glider View Post
Make that more like launching the cap.
Want to ask how I know, man them things are hard to find
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Old Oct 4th, 2009, 09:29 PM     #6
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Re: Over full oil tank FLSTSI?

Thanks guys! I had that question ask of me today. I knew what would happen and I just assumed other riders knew also. The friend was over and I was helping change his oil and lube his bike when he ask me that. I really wanted to see the answers I would get. Told him about this site and told him he could ask any question without fear of being belittled for doing so. Thanks again! Springer03

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