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Old 09-10-2012, 09:59 AM
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What fluid are you guys with truetracs running?
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Old 09-10-2012, 10:04 AM
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The cheapest stuff on the shelf that isnt remanufactured
Coastal is a recovered fluid..
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Old 09-10-2012, 11:54 AM
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Valvoline 75-90 conventional. Do not use synthetic.
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Old 09-10-2012, 03:48 PM
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Like said, DO NOT use synthetic fluids with your True-trac. I dont have mine installed yet but Ill probably just run whatever GM non synthetic fluid the dealer has.
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Old 09-10-2012, 05:19 PM
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lucas 80-90 non-synthetic
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Old 09-10-2012, 11:40 PM
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just wondering, why no synthetic?
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Old 09-11-2012, 12:41 AM
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Originally Posted by 03chevyroyce
just wondering, why no synthetic?
Something about how the diff won't lock properly with synthetic. You can do a search on it. Some guy's diff wouldn't lock at all, then he switched to conventional as recommended and it worked.
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Old 09-11-2012, 03:03 PM
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Not to mention Eaton says NOT to use synthetics with their truetrac differential.
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