OMC hi-vis gearcase oil equivalent

[bubba04]

I have a 1960 Evinrude Fisherman 5.5 HP motor that I'm in the midst of changing the gearcase oil. I was at Gander Outdoors and discovered I had a choice of 80w90 or 90w. Which one is best suited to my engine, if any?

BTW, when draining the old oil, it came out brown. Is this normal? The reason I ask is because upon taking off the propeller, I discovered fishing line wrapped around the shaft.

 

[F_R]

Either one is acceptable. 90 weight Hypoid oil was the original recommendation, if it matters to you. I wouldn't worry about the color, you don't know what it was when it went in there. However, fish line is a real seal killer. If you didn't find water in the oil, refill it with clean oil and recheck it after a few hours of running.

 

[MTboatguy]

I just changed the oil in 50HP and used quicksilver 80-90W oil, which is what most of the shops around here use on the lower units.

 

[jimmbo]

The Quicksilver Premium Gear Oil is very good, and is usable in most gearcases, the exceptions being the OMC Electric, Hydro-electric, and a lot of Volvo I/O cases.

 

[bubba04]

Thanks for your responses