Marine Grade?

Discussion in 'Bubba's Outboards' started by Mr Twister, Mar 9, 2009.

  1. Mr Twister

    Mr Twister New Member

    Messages:
    107
    State:
    Toronto, OH
    I am changing the lower unit grease on my Johnson 9.9. While at the store I noticed two types of grease. One was just regular SAE80W-90 GL-5 and the other was "Marine Grade" SAE80W-90 GL-5. The only difference I can find is price. Marine Grade is $3 for 8oz and the regular is $3 for 1qt. Is there a difference? Must I use the "Marine Grade"?

    Thanks!
     
  2. whisker maniac

    whisker maniac New Member

    Messages:
    2,712
    State:
    arkansas
    I think the marine grade has some additives in it that won't let it break down as easy in water.
     

  3. Mr Twister

    Mr Twister New Member

    Messages:
    107
    State:
    Toronto, OH
    Thanks! I'll stick with that then.