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What lube in 1974 omc upper gear case

stoweii

New member
I have a 1974 omc what gear oi

I have a 1974 omc what gear oil goes in upper and lower gear casees ( I KNOW SILLY qUESTIONS BUT i CANT R remember.
 
Upper can use Type C or any 80

Upper can use Type C or any 80W90 marine gear lube.
lower MUST be "Type C".
 
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