Steve Saunders Goldwing Forums - View Single Post - Difference between Hypoid and Full Synthetic Gear Oil
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post #4 of (permalink) Old 03-22-2009, 11:29 PM
Shimmy8
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Join Date: Jul 2008
Location: CHILLIWACK, British Columbia, Canada
Posts: 40
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A few years ago, GM switched from 80w90 Hypoid Gear Oil to a full synthetic 75w80 in the rear diff, in doing so they dropped the fluid level about 3/4 of in an inch.
They were having problems with the pinion bearrings going out in cold weather on the front diffs of the 4X4 trucks and to fix that concern they had the dealers replace the 80w90 with 75w80 synthetic and this cured the concern.
I have been running synthetic in the front and rear diff of my ATV for about four years, improved the fuel milage a little and rolls out of camp in the cold mornings much easyer.
So I belive you should have no problems.

SHIMMY, CHILLIWACK B.C. CANADA
GRAND MASTER GM TECH.
LOVE PLAYING WITH BIKES
CT90&YAMAHA BIG BEAR, NOW 81 GL11OO
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