I am doing a tune up on my 2000 Mercury 50hp 2 stroke. I went to wal mart last night and got gear oil, trim fluid, grease and spark plugs (not from walmart.) the quistion is how much will that lower take. Also is the Pennnzoil marine 80 w90 good gear oil to use. For the motor i picked up quicksilver 2 stroke oil. thanks for the help and if anything is missing off my tune up list please add. <br /><br /><br />LDG
