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Q: rear differinal on 1990 GMC S15

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
how do I change rearend oil
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simple. unbolt the 10 attaching bolts on the housing and catch the oil in a pan. get a cover gasket and install. get the correct fluid and the proper amoount and add at the port on the drivers front of the differental. you will need a 3/8 rachet with a 3 inch extension to remove fill plug. fill oil to the level of the plug.

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