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Fluid capacity?
Posted by: 48kb1panel ()
Date: January 16, 2020 12:45PM

How much GL4 85/90 gear lube will I need to refill a 4speed trans and differential? Thank you Mike

My name is Mike Worrell living in southern Iowa my vairs are a 64 2dr convertible monza 900 with 110 motor 4 speed light yellow with blk interior. Then a few months ago I got a 65 2 Dr convertible monza 900 with 110 motor 4 speed
Also light yellow with blk interior. Not sure what gear ratio as of now I'll have a look and up date. I really like them both but really liking the 65. They really made a lot of changes in a 1 year difference ????

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Re: Fluid capacity?
Posted by: Timothy Shortle ()
Date: January 16, 2020 01:36PM

I would buy a gallon. You'll probably use about 2 1/2 quarts and have some on your shelf. Try not to overfill them. I add some to each going back and forth on level ground.

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Re: Fluid capacity?
Posted by: 48kb1panel ()
Date: January 16, 2020 02:01PM

Thank you Tim

My name is Mike Worrell living in southern Iowa my vairs are a 64 2dr convertible monza 900 with 110 motor 4 speed light yellow with blk interior. Then a few months ago I got a 65 2 Dr convertible monza 900 with 110 motor 4 speed
Also light yellow with blk interior. Not sure what gear ratio as of now I'll have a look and up date. I really like them both but really liking the 65. They really made a lot of changes in a 1 year difference ????

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Re: Fluid capacity?
Posted by: JimBrandberg ()
Date: January 16, 2020 08:08PM

I've switched from 85/90 to 80/90 based on recommendations here.
All I could find locally was Sta-Lube 85/90 at NAPA for $36.
Last time I bought a case of 12 quarts of Brad Penn 80/90 on Ebay for $7 a quart. You can probably just buy 4 quarts for a little more.

Jim Brandberg
Isanti, MN
CorvairRepair.com



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