What oil goes in trim pump

gwgautney

Petty Officer 1st Class
Joined
Aug 28, 2013
Messages
283
Was loading boat today on a pretty steep ramp and the trim motor was running but not trimming the outdrive up. Rocked the boat and it came on up. Pretty sure fluid is low what oil do I need to put in it.
 

Bondo

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Apr 17, 2002
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71,348
Re: What oil goes in trim pump

Ayuh,... It's a pretty simple system that's happy with 'bout any oil lighter than 'bout 30W,...

Merc has used ATF, Hyd. oil, 'n 10W-30 motor oil over the years,...
 

ba5e

Seaman
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Sep 13, 2010
Messages
62
Re: What oil goes in trim pump

I wonder, is it ok to mix oils in the trim system? For example I have ATF now but have a load of motor oil that I won't use in the block.
 

achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
Re: What oil goes in trim pump

I wonder, is it ok to mix oils in the trim system? For example I have ATF now but have a load of motor oil that I won't use in the block.

It's a very simple gear pump and a couple of rams.... You could put anything in there (including water :eek:), it'll work. As long as the oils being mixed don't coagulate then it will be fine. And aren't too thick (makes the pump work too hard)...

About a year ago I was replacing the reservoir on my trim pump and when I refilled it, I accidentally put ATF in when the rams still had 10W30 in them... All I got was a nicer shade of red :facepalm: :D, system still works as designed.... ;) I'm considering flushing the whole lot out and putting Tellus T32 in... (Google that Bondo!!! :lol:)
 
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Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,348
Re: What oil goes in trim pump

It's a very simple gear pump and a couple of rams.... You could put anything in there (including water :eek:), it'll work. As long as the oils being mixed don't coagulate then it will be fine. And aren't too thick (makes the pump work too hard)...

About a year ago I was replacing the reservoir on my trim pump and when I refilled it, I accidentally put ATF in when the rams still had 10W30 in them... All I got was a nicer shade of red :facepalm: :D, system still works as designed.... ;) I'm considering flushing the whole lot out and putting Tellus T32 in... (Google that Bondo!!! :lol:)

SHELL TELLUS OIL T 32

NOW SHELL TELLUS OIL S2 V 32

Description:
This product is now available under its new name SHELL TELLUS OIL S2 V 32. Please use the link below.

Product Cross Reference Options:
SHELL TELLUS S2 V 32

Ayuh,.... Sounds like Shell Hydraulic oil,... ;)

The stuff in the 55 gallon drum in my shop is a 46 grade,...

Both appear to be 'bout a 10W or maybe a 15W oil,...
 
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achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
Re: What oil goes in trim pump

Yep, we use it in our ROVs... We use 32 in the vehicles and 46 in the winches... Unless we're heading to a cold climate (like Sakhalin), when we use 22 in the vehicles and 32 in the winches (by mixing 1:1 the existing 46 with new 22 ;))... Be the bee-knees in a trim system... ;) and probably cheaper than Merc's mark-up on 10W oil...

Chris......
 
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