Marine-grade Transmission Oil
Posted: Wed Oct 20, 2021 6:29 pm
Hi,
I live on the water in New Jersey, and I have a boat. I noticed that the gear oil for my lower unit, I.e. the transmission, is SAE 90 and GL4. Seems to be the exact specification called for in the shop manual for an Elan transmission.
Reading various posts/threads on the subject here, it seems like many people are trying to get something close to that spec with various products. Most of what I’ve seen in the Autozones and such are multi-viscosity, multi spec (GL4 and/or GL5). I’m certainly not an oil expert by any stretch, so I’m just posting this on the off chance it might be helpful.
The product I use in the boat is Mercury Quicksilver Gear Oil, SAE 90. It’s readily available in any marine supply store, or mail order from West Marine, Overtons, or even Amazon.
I’m still in the restoration phase, so I haven’t tried this in my car yet. I know there are a few really oil-knowledgeable members here.
Any thoughts?
Best regards,
Tony
I live on the water in New Jersey, and I have a boat. I noticed that the gear oil for my lower unit, I.e. the transmission, is SAE 90 and GL4. Seems to be the exact specification called for in the shop manual for an Elan transmission.
Reading various posts/threads on the subject here, it seems like many people are trying to get something close to that spec with various products. Most of what I’ve seen in the Autozones and such are multi-viscosity, multi spec (GL4 and/or GL5). I’m certainly not an oil expert by any stretch, so I’m just posting this on the off chance it might be helpful.
The product I use in the boat is Mercury Quicksilver Gear Oil, SAE 90. It’s readily available in any marine supply store, or mail order from West Marine, Overtons, or even Amazon.
I’m still in the restoration phase, so I haven’t tried this in my car yet. I know there are a few really oil-knowledgeable members here.
Any thoughts?
Best regards,
Tony