Axle oil and trans fluid

Anything Corvair related
Post Reply
Blair
Posts: 34
Joined: Sun Aug 06, 2017 9:03 pm

Axle oil and trans fluid

Unread post by Blair » Sun Oct 08, 2017 12:18 pm

Where do I add axle oil and transmission fluid? Is it common or normal for the two to mix and how big of a problem would that be if i discovered it while draining it? Im not positive thats what it is, i just suspect it

User avatar
bbodie52
Corvair of the Month
Corvair of the Month
Posts: 7361
Joined: Mon Aug 06, 2012 12:33 pm
Location: Lake Chatuge Hayesville, NC
Contact:

Re: Axle oil and trans fluid

Unread post by bbodie52 » Sun Oct 08, 2017 4:22 pm

BE SURE TO ONLY FILL YOUR DIFFERENTIAL AND MANUAL TRANSMISSION WITH GL-4 GEAR LUBE. GL-5 gear lube will damage the "yellow metal" components in your manual transmission. The Corvair transaxle shares gear oil between the manual transmission and the differential, so the gear lube must be GL-4 in both.

ImageImage

The specification section of the shop manual supplement (attached) indicates a rear axle lubricant capacity of 3.1 pints in 1962 models, and 4.5 pints in 1963 models. The same section indicates that the manual three speed transmission has a capacity of 3 pints, and the four speed transmission has a capacity of 3.75 pints. Since the fluid is shared between the transmission and differential, it is important to utilize GL-4 gear lube in both the transmission and the differential. There is a fill plug on the side of the differential and another one on the side of the transmission. Both should be filled to bring the fluid level up to the bottom of the threads before reinstalling each fill plug.

Image

Manual transmission fill plug is circled in black...
Image
Image
Attachments
1962-1963 Supplement - Chevrolet Corvair Shop Manual - Section 2 - General Lubrication.pdf
1962-1963 Supplement - Chevrolet Corvair Shop Manual - Section 2 - General Lubrication
(161.33 KiB) Downloaded 2 times
1962-1963 Supplement - Chevrolet Corvair Shop Manual - Section 12 - Specifications.pdf
1962-1963 Supplement - Chevrolet Corvair Shop Manual - Section 12 - Specifications
(626.09 KiB) Downloaded 5 times
1964 Supplement - Chevrolet Corvair Shop Manual - Section 2 - General Lubrication.pdf
1964 Supplement - Chevrolet Corvair Shop Manual - Section 2 - General Lubrication
(134.91 KiB) Downloaded 5 times
Brad Bodie
Lake Chatuge, North Carolina
Image 1966 Corvair Corsa Convertible

Post Reply

Return to “Corvair Talk”