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gear Oil
- Thread starter pcator
- Start date
matt_unique
New member
pcator":3b4psv64 said:As the sum total of gear oil changing in my manual for the Honda bf150 is "change gear oil". I have to ask this question. Do you use the standard 90 w gear oil or is there something else I should use?
TIA
Patrick
I'm not sure about the Honda's specifically. The Suzuki's use the straight 90 SAE Hypoid gear oil or the Suzuki brand 80w90 Hypoid gear oil. You also want to make sure you replace your gaskets on the plugs.
--Matt
Almas Only
New member
Correct me if I'm wrong, but I'm unaware of any Honda spec for "Hypoid" gear oil. I don't have access to a 150 manual, but have checked those for the 90 and 115.
I see calls for "API GL 4/5", both of which are ratings that include hypoid type gears. However, it looks to me that any marine gear oil with an API GL 5 rating meets or exceeds the specs, whether or not the manufacturer calls it "hypoid".
I see calls for "API GL 4/5", both of which are ratings that include hypoid type gears. However, it looks to me that any marine gear oil with an API GL 5 rating meets or exceeds the specs, whether or not the manufacturer calls it "hypoid".
Wayne McCown
New member
I changed out my gear oil yesterday. For the first time, I used a "pump" (which I just purchased) instead of the squeeze bottle> What a difference: well worth $14!
My Honda 150 owner's manual does not mention the word Hypoid whereas the shop manual says "Marine SAE 90 Hypoid gear oil API Service classification (GL-4)". I agree that the word Hypoid is not necessary on the bottle, but it helps people to identify the correct oil without having to read the fine print on the container which, as in the case of the West Marine brand of oil, might not list the API spec.
Almas Only
New member
I'll check my shop manual on the 90 and see if it mentions "hypoid" also. Interesting that the owner's manuals don't.
For whatever it's worth, both of West Marine's branded lower unit lubes are rated as meeting or exceeding GL5. I'm not pushing their products, but in this instance, do highly recommend both, in preference to other brands. I particularly like the synthetic, and have had excellent results - virtually no metal loss from the gears (consisting only of a very fine powder residue on the drain plug), and no bearing failure or visible wear.
What I really like is that it stays amber, rather than turning black and stinking of sulpher - yuck. Staying amber means that it's easier to detect any water intrusion and solids when you change fluid. Just collect it in a clear glass bowl, and hold it up to the light.
For whatever it's worth, both of West Marine's branded lower unit lubes are rated as meeting or exceeding GL5. I'm not pushing their products, but in this instance, do highly recommend both, in preference to other brands. I particularly like the synthetic, and have had excellent results - virtually no metal loss from the gears (consisting only of a very fine powder residue on the drain plug), and no bearing failure or visible wear.
What I really like is that it stays amber, rather than turning black and stinking of sulpher - yuck. Staying amber means that it's easier to detect any water intrusion and solids when you change fluid. Just collect it in a clear glass bowl, and hold it up to the light.