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Old 12-10-2010, 06:52 AM
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Default 30w hydraulic oil for trim tabs

Been a little confused on what type of fluid to add to my 36 yellowfin trim tabs. The actual pump is made by Parker hydraulics. Wylie said I need a "30 weight hydraulic fluid." I can't seem to figure out which ones are 30w and which are not. It doesn't say on bottle. Would sea star hydro steering fluid work? Any other suggestions? Thanks in advance!
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Old 12-10-2010, 06:56 AM
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if they are k-planes look at the pump it says use 30w motor oil. and no seastar fluid is not 30w
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Old 12-10-2010, 07:03 AM
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It doesn't say k plane anywhere unless I didn't see it. The pump right by the reservoir says Parker on it. It doesn't have fluid reqs on it
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Old 12-11-2010, 05:11 AM
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Engine oils are graded by weight (viscosity), hydraulic oils are not.
Some trim pumps can use either hydraulic fluid, automatic transmission fluid, or engine oil. I would not mix the oils though so see if you can find out what the pump manufacturer specified, drain the old oil and refill.
From the info I can find, Parker.Oildyne pumps specify Quicksilver Power Trim and Steering Fluid
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Old 12-11-2010, 05:20 AM
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take a picture.
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Old 12-11-2010, 08:23 AM
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hydraulic oil is usually 70 wt and varies*

motor oil is 30 wt

gear oil is 90 wt


* i think
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Old 12-11-2010, 09:24 AM
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I don't think the K-Planes are very fussy. Every set I've owned has worked just fine on either Mobil DTE 25 or what is sold as "tractor fluid" at auto parts stores.

The Mobil appears to be a 46 viscosity, but the MSDS for the O'Reilly tractor fluid shows it as a 32 weight.

http://www.msdsxchange.com/english/s...ramid1=3201038
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Old 12-11-2010, 09:49 AM
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I've always used 10W-40 in K-Plane pumps...
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Old 03-10-2013, 07:27 AM
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The fluid in my k planers is red, it looks like transmission fluid. Can that be correct? Is there a red hydraulic fluid
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Old 03-10-2013, 07:33 AM
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Bennett's use ATF. Should work great in most hydraulic steering and trim tab systems
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Old 03-10-2013, 07:35 AM
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Quote:
Originally Posted by Penta Diesel View Post
Bennett's use ATF. Should work great in most hydraulic steering and trim tab systems
I have k planers. I have been told the k planers use 30 oil. The stuff in my reservoir is definitely not 30w or 10-40 oil.
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