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Which front diff fluid?

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Which front differential fluid does everyone use? This is for my 05 1500. The manual says 80w-90 fluid, does any brand/type work fine?


use 75w-90 Amsoil Severe gear here.

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  • 4 years later...

I have a 2001 silverado 5.3l I have black front diff seal and vent cap. I have heard that black seal isn't compatible with synthetic oil would it be ok to use a synthetic blend 80w90 I found vavoline durablend a synthetic blend 80w90 sounds like it would be perfect to use since it's just a blend what do you all think? Thanks for the help in advance.

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