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Can I use Power Steering fluid for Trim Tabs

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Can I use Power Steering fluid for Trim Tabs

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Old 07-10-2015, 08:36 AM
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Originally Posted by ThisIsLivin
There are differences in how power steering or trans fluid and motor oil react with seals. Never use motor oil when ATF or Power Steering Fluid is called for. Also motor oil doesn't have the anti-foaming agents that ATF or power steering fluid have. which can make your hydraulics spongy. Just saying.
I believe merc specs motor oil for their trim pump...pretty sure its in my 575sci manual.
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Old 07-10-2015, 08:53 AM
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I agree with the above post. Don't have my manual in front of me but I seem to remember 10w-30 for drive trim and tab pumps. Maybe i'm thinking of the older ones on my 10 meter , not sure, I would check the manual.
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Old 07-10-2015, 04:45 PM
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Dana recommended 30w for my HP1000 tabs. I've also run it in my trim pumps for the past 20 yrs with no problems.
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Old 07-22-2015, 11:03 AM
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My manual calls for ATF/Power steering fluid or 10w30 as a substitute. I used ATF.
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