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Home » Public Forums » GMCnet » Final Drive Coughing Up Gear Oil (Gear oil is coming out the vent.)
Final Drive Coughing Up Gear Oil [message #343701] Sun, 26 May 2019 21:58 Go to previous message
JBO is currently offline  JBO   Canada
Messages: 65
Registered: August 2012
Location: South Western Ontario
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Gentlemen,

Does anyone have any idea why all of a sudden, out of the blue my final drive is losing its gear oil out the vent? This is on my 68 Toronado and not the 78 Royale.

I started noticing a small puddle of fluid under the car and realized it was gear oil. I confirmed it was from the final drive. It is not over filled, I removed the plug and actually had to add more fluid. I topped it up and took the car back out for a run, came back home, looked underneath and the gear oil was coming out the vent.

I have been restoring this car for what seems like forever, I have gone through all the mechanicals including the final drive. There is perhaps 150 miles on the drive (and everything else) since it was overhauled, although it was probably done 7 years ago.

Thanks in advance, Jim



Jim Owens, 78 Royale, Out skirts of Kitchener, Ontario

[Updated on: Sun, 26 May 2019 22:11]

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