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Post Info TOPIC: Differentials

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Home / Differential Instructions

Instructions for Cleaning Differentials

Auto-Rx® Plus is your solution for cleaning differentials, and it works as you drive to liquefy the contamination residue and build-up.
To get the most out of your cleaning experience, we recommend the following easy, step-by-step method:

STEP 1Into the differential oil reservoir, add 2 ounces of Auto-Rx® Plus per quart of differential fluid.
STEP 2Drive 1,000 miles and then drain.
STEP 3Refill according to vehicle manufacturer’s recommendation. This unit uses heavy gear oil.


The chemical formulation of Auto-Rx® Plus is the same for engines, transmissions, motorcycles, and diesels.  The only difference is in the individual applications.

Frank J. Miller
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