Quote:
Originally Posted by r carl
If the original antifreeze was Dexcool (red) your engine should be ok.
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I think the rusty look to the antifreeze was due to the Dexcool, I have 40000 miles but 15+ years since build in 1998.
Here is info from wikipedia on Dexcool, the 7.2L was not included in the 2007 settlement.
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We are pleased to announce that we have reached a tentative nationwide settlement with General Motors...
You will have the option to be included in the settlement if you incurred out-of-pocket expenses for any of the following repairs:
1. A replacement of the lower intake gasket, made within 7 years or 150,000 miles of the date of initial delivery
for 1995-2003.5 Model Year vehicles with 3.1-liter V6 and 3.4-liter V6 engines, where OEM lower intake manifold gasket was a nylon/silicone gasket, and the vehicle was equipped with Dex-Cool coolant.
2. A coolant sealability repair (including, but not limited to, throttle body gasket, upper intake manifold gasket, lower intake manifold
gasket, etc.), made within 7 years or 150,000 miles of the date of initial delivery for 1995-2004 Model Year 3.8-liter V6 engines (RPO L36),
where the vehicle was equipped with Dex-Cool coolant.
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So anybody with Dexcool and plastic gasket will have problems down the road, not enough AS were produced to generate a class action suit. I did see in the original 1999 GM manual that Dex-cool was use and is the recommended antifreeze.
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