Dear Board,
I have 3 small outboards that I need to winterize. As part of the process I am going to change the oil in the lower units. The motors in question are a 35 HP 1982 Evinrude, a 6 HP 1986 Evinrude, and a 1997 4 HP Yamaha. I need a bit more than a pint of gear oil to re-fill all three gearcases.
A pint of gear oil in a boating store is $ 8.00 or $ 9.00. I can buy a gallon of 75-90WT gear oil at an auto parts store for $ 13.99. I won't need all of it but I would then have enough left over for several years worth of re-fills.
My question is will I do any harm to my motors by using oil marked for automotive limited slip rear ends? I personally think it would probably work just fine but I'd prefer to have someone confirm my suspicions.
Thanks in advance,
Tim Murphy
I have 3 small outboards that I need to winterize. As part of the process I am going to change the oil in the lower units. The motors in question are a 35 HP 1982 Evinrude, a 6 HP 1986 Evinrude, and a 1997 4 HP Yamaha. I need a bit more than a pint of gear oil to re-fill all three gearcases.
A pint of gear oil in a boating store is $ 8.00 or $ 9.00. I can buy a gallon of 75-90WT gear oil at an auto parts store for $ 13.99. I won't need all of it but I would then have enough left over for several years worth of re-fills.
My question is will I do any harm to my motors by using oil marked for automotive limited slip rear ends? I personally think it would probably work just fine but I'd prefer to have someone confirm my suspicions.
Thanks in advance,
Tim Murphy