My manual says to use 10w-30 oil in my trim pump. But the dealer sells Mercruiser part #92-858075K01 power trim & steering fluid. I have a 1988 165 3.7l with alpha1 out drive. It's very confusing. I wonder if either one is good.
The thing is I updated the pump and reservoir to the four screw white reservoir. It originally had the one screw white plastic container. I lost most of the oil in the cylinders also. The reservoir with the single screw cracked all over.
I had oil on the rear carpet. Now I'm installing the rebuilt trim pump. So, put the 10w-30 non-detergent in and she should be good?:embarassed:
Well, I put the trim fluid in from mercruiser. ATF with dexron is no good. Mercruiser has the trim pump oil.
It is a clear hydraulic oil for all stern drives. I had to bleed the system. It works ok right now. Time will tell.
It has the updated new pump with white four screw reservoir.
