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What kind of oil for a rear end?

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Old Aug 11, 2002 | 11:40 AM
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jthorval's Avatar
jthorval
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From: Saskatoon
Car: 1991 Z28
Engine: 5.0
Transmission: Auto
What kind of oil for a rear end?
What weight of gear oil should someone use for their rearend. Should it be 50/50 synthetic or just 75/80 or 80/90???

Oh, I also live in Saskatchewan Canada = +40 to -40 degrees
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Old Aug 11, 2002 | 12:05 PM
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Sitting Bull
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From: Calgary, Alberta, Republic of Western Canada
Car: 1986 Sport Coupé
Engine: 305-4v
Transmission: 700R4 and TransGo2
He means in Celsius. That's like 100* Farenheit to -50*. Extremes that few places see.
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Old Aug 11, 2002 | 12:41 PM
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jthorval
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From: Saskatoon
Car: 1991 Z28
Engine: 5.0
Transmission: Auto
Oops, I should have clarified that
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Old Aug 11, 2002 | 01:17 PM
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ede's Avatar
ede
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From: Jackson County
i've got mobil 1 and amsoil in the rear ends of my carsand truck with no problems. not sure of the weight, 85w-90 i think. i don't have any on hand to check the label right now.
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Old Aug 14, 2002 | 01:09 AM
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racereddy20
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I'm running 80-90W in +100* weather right now. No problems so far.
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Old Aug 14, 2002 | 03:02 AM
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Sitting Bull
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From: Calgary, Alberta, Republic of Western Canada
Car: 1986 Sport Coupé
Engine: 305-4v
Transmission: 700R4 and TransGo2
Whichever you choose, I think synthetic is the way to go. It will at least provide some lubrication when starting off to someplace at -40!

50 weight seems a bit light but maybe about right for the winter.
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