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What oil should be used in trim pumps?

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What oil should be used in trim pumps?

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Old 08-28-2002 | 02:53 PM
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stevel
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Default What oil should be used in trim pumps?
What oil should be used in the standard mercruiser trim pumps? I need to add oil and I don't have any of the manuals.

Trans Fluid?
Motor Oil?
Hydrualic Oil?
Power Steering Fluid?

Thanks!
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Old 08-28-2002 | 03:00 PM
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THRILLSEEKER
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Steve Mercury makes a specific power trim oil. you can buy it in any marina.
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Old 08-28-2002 | 03:35 PM
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I just used straight 30w
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Old 08-28-2002 | 03:49 PM
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I use 30wt too.
That's what my maunal calls for.
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Old 08-28-2002 | 04:04 PM
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Thanks everyone!
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Old 08-28-2002 | 05:54 PM
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Stevel,

By using thinner viscosity motor oils, that will enable your pumps to work much faster.

Steve
 
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Old 08-28-2002 | 09:50 PM
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I was told years ago to use 20 or 30 weight non detergent motor oil. You can get it at NAPA
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Old 08-29-2002 | 05:23 PM
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Typical Mercruiser. My manual says 10W30.
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Old 08-30-2002 | 08:11 PM
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i have used tranny fluid in a few of my boats for years and have never had a problem........i think tranny fluid is a little thicker which gives me better accuracy during trimming
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Old 08-31-2002 | 12:03 AM
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Geez now you you guys have me wondering. I was told to use transmission fluid. Now is this ok or not??
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