mercury foot ??

[hangup]

CHECK MY MER. FOOT FOR WATER. NO WATER [GOOD] emoSmile WHAT COLORIS THE OIL IN THE FOOT ?. MY IS LIGTH BROWN AND THICK..AND WHAT KIND OF OIL CAN I USE. ITS A 1979 MER. 80HP. emoScratch emoScratch

 

[Bubbakat]

The light brown color could mean it has had a little water in it at one time. Its time to replace those little seals behind the fill and drain screws. You can get a decent 90 weight lower gear oil and any marina or even at wally world or at your local parts store. Just make sure it says for marine use on it.

 

[hangup]

THANKS, BUBBAKAT

 

[wrechin2]

All 80-90's are API GL5. This is the expansion rate of the fluid. You pay word marine to be on it. Alot of the older mercury manuals tell you to use 80-90 automotive. Go to wally world and get a quart of marine and automotive and they will have the same ratings just different prices!!! I have ran automotive fluids in mine and my customers with 0 problems except heavier wallets. Just my 2 cents worth.