Coolant looks yucky - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 06-02-2005, 12:52 PM   #21
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Quote:
Originally Posted by jr's3800
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Originally Posted by jr's3800
I make sure its full... Never let it run down, ever...

I know of several people that almost never check the coolant or oil... This is how my friend ends up working on peoples cars... Low on coolant but had no idea... Poof there goes the head gasket/* ..... If they would have simply looked to see the system was full it wouldn't have been a problem...

The last 3100 he worked on was a 97 with 180,000 miles on it... It had dex all of its life... The intake gaskets finally failed, the lady ran it hot and killed the head gaskets... 180,000 and I have seen soo many reports of people blaming dexcool for their problems...

Sad part is that I have seen the Green coolant in a 3100 with the exact same results... Some before 100,000 some after 150,000 miles...

I'm just really pissy about the whole green vs dex cool thing I guess...
JR..I was helping Mechanic Dan change motors for a quite a while and this one truck we did... guy changed radiator, hoses, tstat...and the list goes on...motor blew..we changed it..he wanted to save money and asked us to use the old water pump along w/other stuff.... we finish up and are adding the fluids...somethings leaking bad. Both look at each other with the "What didn't you hook up and check twice" look. Coolant was pouring out the weep hole...

Moral of the story..moron blew a motor cause he didn't keep the rad full. Also couldn't diag a leaking waterpump....
LMAO... My friends brother in law had an Acura Legend with a 3.2 ... He ran it hot and killed the head gaskets... we tore it apart and replaced the head gaskets, put it all back together... Told him he needed a new water pump, he waited... Ran it hot again and poof there went the head gaskets again... New head gaskets and a few helicoils later it was running again with a new water pump... The the radiator sprung a leak, there went the head gaskets.... He ended up getting a low milage motor... You can only fix them so many times...
Lesson of our off topic convo: PUDDLES MEAN SOMETHING! (To some it'* a quick fix...to others is big money)
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Old 06-02-2005, 02:40 PM   #22
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fresh dexcool looks delicious, like some kind of crazy koolaid, obviously i would never actually drink it, but it looks good
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Old 06-02-2005, 11:34 PM   #23
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Default Re: Dex cool

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Originally Posted by Flatlander
I see in a previous post quoting the GM'* engineer that the problems with the 4.3 liter engine is because dex cool does not provide protection for cast iron cyl block and heads. What do you think our boneville engines have? are they not cast iron block and heads also? Another thing he states that the coolant should never be allowed to go low. On both of the 4.3'* I am talking about the coolant levels in the overflow tank always showed full and were never allowed to drop below the cold line. Friends of mine that own an independent garage have also seen problems with dex-cool plugging up systems. Maybe it is okay in aluminum blocks and heads but I will see how my parents 03 Cavalier'* cooling system lasts.

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Did you read the entire paragraph? He did not say that Dex-Cool does not provide protection for cast iron cyl block and heads. He said it won't provide protection in cast iron blocks and heads if it is not kept full. Full has nothing to do with the overflow tank. A bad cap could leave your tank full but you radiator low. Then you will have a problem. You CANNOT allow air in the system.
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Old 06-03-2005, 12:06 PM   #24
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Default Dex Cool

Sorry: I did not mean to get things worked up like this and that was never my intention. I just was stating my experiences with dex-cool. Regarding keeping the cooling system full, I always checked the overflow tank and it never was down in coolant. I didn't realize that there was a problem until the heater quit working. I park on a cement driveway all the time and never noticed a leak on the cement and never noticed a coolant leak during oil changes when I did them. I found out later that the intake manifold gasket was leaking very slowly into the engine but the level would always stay up in the overflow tank. I guess if you have dex-cool just be sure to keep an eye on the level in the radiator and not to trust the overlow tank coolant level. Now on another note, I have been running Evan'* NPG+ coolant in my Honda motorcycle for 4 years and this spring when checking the radiator and themostat etc. I found that everthing in that system looks still like brand new and the coolant has performed flawlessly during that time. I got some more this spring for my Bonneville and going to try it in there also. Now this might be another topic for debate

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