Gear lube

[waterboy84]

I have a 120hp force im trying to get lower unit gear lube changed. Can i use the supertech 80w90 from walmart. If not what would be a cheaper but good recommended gear lube i could use

 

[Frank Acampora]

Wal Mart used to carry a marine grade lower unit oil. I used it until I could no longer get it. As long as there are no problems with the existing lower unit, the automotive rear end oil is acceptable.