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Old 28 Sep 2012, 06:26 pm   #5 (permalink)
larrymoencurly@my-deja.com
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Default Re: Differential fluid in 1998 Corolla

On Tuesday, September 25, 2012 8:08:01 PM UTC-7, SuperBK wrote:
>
> I thought the same thing - ATF should be able to handle it,
> but maybe gear oil would be better.


I have a 1986 Corolla with the 3-speed A131L automatic that keeps the transmission fluid separate from the differential fluid, and the factory manual specifies Dexron for the transmission and Dextron for the differential. Some old FWD VWs with automatics used Dexron in the transmission and 80W-90 gear oil in the differential.

Gear oil and engine oil are rated by different viscosity ratings, so 50 weight gear oil is pretty light, while 50 weight engine oil is thick and aboutlike 80W-90 gear oil. Dexron is roughly like 10 weight engine oil. Here's a table showing different viscosity ratings:

http://www.synlube.com/images/viscosity_table_2.jpg




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