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Old April 22nd 04, 05:24 PM
D.B.
 
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Default Can anyone answer a question I have about lube for a Mercruiser Alpha outdrive foot?

I have a 1989 18 ft stingray with a 3.0 liter Mercruiser engine and
Alpha outdrive. I have a leaking seal in the outdrive that is causing
about a cup of water to enter into the foot about every 8 hours or so
of operation. I am going to have all of the seals replaced, but in
the mean time, I have been replacing the oil in the foot after every
trip to the lake (about 4 hours per trip) just to make sure no damage
occurs until the repairs are made. My question is this, I have been
using the foot oil from a local marine dealer that is made for
"marine" applications. It is 80W90 viscosity. Can I use the cheaper
gear oil of the same viscosity from Wal-mart, being as I am changing
it so frequently or will this lack of "detergents" from the
"non-marine" labeled oil cause a problem?

Thanks,

Dave

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Old April 22nd 04, 10:30 PM
LD
 
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Default Can anyone answer a question I have about lube for a Mercruiser Alpha outdrive foot?

I have asked and have been told by two mechanics, that the "standard" gear
lube works fine. It's difficult to find a specification but I seem to
recall seeing the "GL 5" on both the automotive and at least one brand of
"marine" grade. One of the mechanics who builds, and re-builds motors and
races boats said he used to work for a large marina with a lot of engine
work and they'd buy the 55gal drums of "standard 80-90 wt. Also, he build a
new gearbox for me for my 200 Merc. and stands behind it, using the 80-90
automotive gear lube.
LD

"D.B." wrote in message
...
I have a 1989 18 ft stingray with a 3.0 liter Mercruiser engine and
Alpha outdrive. I have a leaking seal in the outdrive that is causing
about a cup of water to enter into the foot about every 8 hours or so
of operation. I am going to have all of the seals replaced, but in
the mean time, I have been replacing the oil in the foot after every
trip to the lake (about 4 hours per trip) just to make sure no damage
occurs until the repairs are made. My question is this, I have been
using the foot oil from a local marine dealer that is made for
"marine" applications. It is 80W90 viscosity. Can I use the cheaper
gear oil of the same viscosity from Wal-mart, being as I am changing
it so frequently or will this lack of "detergents" from the
"non-marine" labeled oil cause a problem?

Thanks,

Dave





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