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How can I tell if I need to change diffential fluid?

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Old Jul 13, 2011 | 03:18 PM
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Default How can I tell if I need to change diffential fluid?

Are there any noises, or other symptoms? It's an A4 and I am at 58k summer miles over a 15 year run...
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Old Jul 13, 2011 | 07:13 PM
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Originally Posted by $$$frumnuttin'
Are there any noises, or other symptoms? It's an A4 and I am at 58k summer miles over a 15 year run...
I changed mine 6 months ago. I have 20K miles on the car, and its 7 yrs old. I just figured it was time to change this stuff. I wanted to learn how to do it myself too. I feel better knowing that all my fluids are new (Coolant,Diff, Tranny,Brake fluid, Clutch fluid etc..)

Toque
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Old Jul 14, 2011 | 12:07 PM
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I changed mine at 78,000 miles, ten years. The old oil was dirty.

Easy to do.

I use Redline in the engine, trans (auto) and differential.

For more on Redline, there is a comprehensive article regarding oils and flat tappet cam failures at corvetteactioncenter.com under the Featured Article heading you will find More Articles and "Engine Oil Deep Dive".

or check: redlineoil.com
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Old Jul 14, 2011 | 02:57 PM
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thanks guys...I will change it now even without symptoms...I have the GM fluid with the additive already mixed in...should be equivalent to the other brands, right?
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Old Jul 14, 2011 | 03:01 PM
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So long as it is the synthetic.
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