Valvoline High performing VS DuraBlend Gear Oil

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Jun 19, 2007
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My auto rx clean phase for my rear diff, is about to complete. It currently have regular valvoline gear oil on it. And durablend is only $1 more. Just wonder which one is good ? it for my 97 camaro z28 5.7L. Thanks
 
any one know what is OCI on durablend on camaro with normal driving condition ? thanks
 
i have the same rear and using the Durablend 80W-90. have not tried auto-rx, tell us how the oil looks.

i would say it could easily go 30K miles or more. i change mine every 2 or 3 years
 
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