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#2655368 - 06/15/12 06:03 PM Unknown coolant/miles, 118K, 97 Chevy C3500
dhellman12 Offline


Registered: 08/29/11
Posts: 184
Loc: Keller, TX
Coolant was not changed at the time of this test, but looks like it should be. Not sure of the history of this vehicle, not sure what fluid is in there now or how long it's been in service.

I assume OAI copied the manufacturer/model from the diff fluid I sent. This is for a 7.4L 454 V8 in a 97 Chevy C3500 truck.

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04DMax 6.6L - Amsoil AME 15w40 178k
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#2655381 - 06/15/12 06:15 PM Re: Unknown coolant/miles, 118K, 97 Chevy C3500 [Re: dhellman12]
Donald Offline


Registered: 03/21/04
Posts: 14927
Loc: Upstate NY
Someone used tap water rather than distilled. I would try and drain and refill the entire system with coolant and distilled water.
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Amsoil ATF in both vehicles & Magnefine filter.

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