Trim pump fluid

[colenighthawk]

Replacing trim pump and I have had several suggestions on what to fill it with! ATF, power steering fluid, hydraulic fluid, 10w-30
Thanks

 

[Mandelon]

Doesn't the pump manufacturer have a recommended product?

As long as the viscosity is close it should work. I would want to use what they recommend. Certainly a fluid that is hydrophobic. (Non absorbent of moisture)

 

[evantwheeler]

Replacing trim pump and I have had several suggestions on what to fill it with! ATF, power steering fluid, hydraulic fluid, 10w-30
Thanks

I put 10-w30 motor oil in mine for convenience. For how little these things operate, I cannot see it being an issue, its not like its a constantly rotating pump.

 

[77charger]

10/30 in mine.

 

[02HoWaRd26]

Power steering fluid is what I’ve always used.

 

[lbhsbz]

The only thing I haven't poured in my trim pump res. is cooking oil. 2 stroke oil, trans fluid, power steering fluid, new motor oil, used motor oil, tractor oil. it all works.

 

[Jonas Grumby]

10x30 here, for years.

 

[HBCraig]

Power steering fluid is what I’ve always used.

Same here

 

[DarkHorseRacing]

Quicksilver power steering and trim pump fluid from west marine.