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Chevrolet Blazer Engine and Performance Problems

142 messages,  Last post on Nov 11, 2009 at 9:09 PM

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#140 of 142 Re: Dex-Crud [duntov] by jlflemmons Aug 25, 2009 (11:27 am)
Replying to: duntov (Aug 25, 2009 11:18 am) "Why risk using Dex-Cool when the green stuff is a tried and true antifreeze when as instructed?"   Because if you don't get every bit of that Dex-Cool out of the system, you will have problems. Like gasket issues and blocked cooling passages.   The big issue with Dex-Cool isn't so much the product, as the change interval that GM published. No way do you leave this stuff unchanged for 5 years 100K miles. I have not come across any issues with 60K changes. The 4.3L intake manifold gasket issue is not coolant related, but an issue with the proper torque of the intake manifold and it's flexing/distortion over time. Not all engines are affected (I have two such engines, one with over 90K and no issue) but some have failed in less than 60K miles, most around 70-80K.   I agree that the standard ethylene glycol antifreeze is good, and has been for years. As long as it is changed at least every 30K or 24 months, it will provide good service. What some folks don't realize is that the antifreeze properties are not the issue, it is the anti-corrosive chemical breakdown that causes problems. Nowhere was this more evident than in the mid-80's GM cast iron engines where the freeze plugs would rust out and start leaking. PITA to fix that "little problem". The parts would cost a couple of bucks, the labor hundreds!
#141 of 142 help by marblaze Nov 11, 2009 (2:07 pm)
how do i programm the remote for my 99 S-10 BLAZER Replies to this message: tidester (Nov 11, 2009 9:09 pm)
#142 of 142 Re: help [marblaze] by tidester HOST Nov 11, 2009 (9:09 pm)
Replying to: marblaze (Nov 11, 2009 2:07 pm) The Chevy Blazer GMC Jimmy Maintenance and Repair topic might be a better fit to your question.   tidester, host SUVs and Smart Shopper

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