05-31-2017, 10:00 AM | #41 |
Senior Member
Join Date: May 2010
Location: Coral Springs FL
Posts: 10,919
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Re: GL-5 no no
Many outboard stern drive marine engines use GL-4 gear oil in their lower unit. It's suppose to be changed every season due to the harsh underwater environment. But, cars wouldn't have the problem.
I wonder if it would be ok for our old Fords. It does not attack yellow metals. Any thoughts? http://www.amsoil.com/shop/by-produc...ine-gear-lube/ |
05-31-2017, 10:11 AM | #42 |
Senior Member
Join Date: Jun 2010
Location: Perry OH
Posts: 1,328
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Re: GL-5 no no
I think it's the non foaming properties that matters in both outboard motors and transmissions. JMHO
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05-31-2017, 10:47 AM | #43 |
Senior Member
Join Date: Mar 2016
Location: LaGrande Oregon
Posts: 865
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Re: GL-5 no no
I change the lower unit oil in my Volvo-Penta every season regardless of hours. Manual says to use "30wt engine oil". But in my avatar synchro tranny I use GL-4. If there is ANY question, why take the chance with GL-5? It certainly isn't cost..........
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