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COPYRIGHT 2003 Ehlert Publishing Group
Q: I have a '99 Honda 1100 Shadow Spirit. Bought it from a kid who lost interest in it.
It was stored well, and when I got it, I did as many fluid changes as I could find. When I changed the final drive gear oil, it looked OK, but all I could find at the local shop was 85W90, so I filled it with that. All works well, but on very cool days or when just out of winter storage and the air is still cool, it drips from the top vent of the final drive. I chalk it up to the hypoid gear oil being a bit too thick and hanging up on the ring gear, causing the leakage.
The gear case has hypoid 80 stamped on it. Was Honda that cornplete in its research to recommend an 80-weight so that this leakage doesn't occur?
Sam Gaustad
Via E-Mail
A: That gear oil drooling is something that can happen with shaft-drive Hondas in cold weather. Once the oil warms up and thins out, they behave themselves. You can minimize it, though, by draining the final drive only when it's good and hot, thus ensuring that all of the thin oil runs out and does not cling to the parts above the fill level like cold oil can. This will prevent overfilling and oil escaping out the vent. I like to use...
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