Hydraulic Trim Oil ?

[Reel Poor]

Can I use ATF in trim pump? If not what?

 

[DHPMARINE]

Re: Hydraulic Trim Oil ?

I have to admit to using it in a pinch.I do feel TNT oil is different.Slightly lighter in viscosity,Older Mercs and Mercruisers called for 10w30 motor oil.

DHP

 

[Reel Poor]

Re: Hydraulic Trim Oil ?

Yep...Thats where i'm at right now, in a pinch. The system has a small leak tha I need to repair in the near future. If 10w30 is closer to spec I have that too. :=

 

[Plainsman]

Re: Hydraulic Trim Oil ?

My manual says to use 20w, which I do. But the motor is 30 years old so it may be different for newer systems.