Lower unit gear oil 1948 Martin & 1956 15 hp evinrude

[trainsnmore]

I am looking for the proper lower unit gear oil to use for a 1948 Martin 7.2 hp and a 1956 15 hp evinrude outboard motor.
Thank you all for your help in the past.

[crosbyman]

wally mart outboard gearcase oil should do I have seen some 90 grade oil are marked…NOT FOR MARINE ENGINE USE so stick to marine stuff.

Joining AOMCI has priviledges 🙂

[Tubs]

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A "Boathouse Repair" is one that done without having tools or the skills to do it properly.

• This reply was modified 4 years, 5 months ago by Tubs.
• This reply was modified 4 years, 5 months ago by Tubs.

[frankr]

Walmart has sae 40 “racing oil” by Valvolene. Don’t put that stuff in fuel mix though.

[Tubs]

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A "Boathouse Repair" is one that done without having tools or the skills to do it properly.

• This reply was modified 4 years, 5 months ago by Tubs.

[hiram1914]

The Martin 60 (7.2hp) uses grease and not oil. If you have a Martin 75 (7.5hp) it uses SAE 40 oil. In the Martin 60 I use Lubriplate 105, but many folks on this forum speak highly of Cornhead grease, which I believe they said is made by or for John Deere.

[crosbyman]

interesting…..what is today’s advantage of grease compared with oils ? wouldn’t modern oils not lubricate properly or better than grease ?

Joining AOMCI has priviledges 🙂

[Tubs]

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A "Boathouse Repair" is one that done without having tools or the skills to do it properly.

• This reply was modified 4 years, 2 months ago by Tubs.

[crosbyman]

that answers the question…

2nd Q any harm in using it in gc with seals ?

Joining AOMCI has priviledges 🙂

[Tubs]

A "Boathouse Repair" is one that done without having tools or the skills to do it properly.

[Author]

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