Re: Some ruminations on antifreeze
> I've seen problems with cooling systems of all types, but I never saw
> green EG antifreeze turn to brown mush the consistency of mud. You realize that Dexcool is almost all EG also, don't you? The only difference between conventional EG and Dexcool is an organic acid corrosion inhibitor package instead of the typical phosphate, silicate corrosion inhibitor package. I don't see any mechanism where a slightly different corrosion inhibitor package could take 8-qts of coolant and turn it into mud. Just like oil, AF's are a huge source or urban legend mythology. - Mark |
Re: Some ruminations on antifreeze
> I've seen problems with cooling systems of all types, but I never saw
> green EG antifreeze turn to brown mush the consistency of mud. You realize that Dexcool is almost all EG also, don't you? The only difference between conventional EG and Dexcool is an organic acid corrosion inhibitor package instead of the typical phosphate, silicate corrosion inhibitor package. I don't see any mechanism where a slightly different corrosion inhibitor package could take 8-qts of coolant and turn it into mud. Just like oil, AF's are a huge source or urban legend mythology. - Mark |
Re: Some ruminations on antifreeze
On Thu, 15 Jan 2004 21:51:52 GMT, "markjen"
<mark.jennings4@comcast.net> wrote: >I believe such problems also occur all the time with conventional "green" >AF's, the introduction of Dexcool just was a convenient whipping boy for the >types of cooling system problems that occur in cars all thetime. But >neither of us have hard data, so not worth taking further. > >- Mark Sorry, you're wrong. There is hard data. *GM* admits this in a variety of FACTORY bulletins concerning issues with contamination from solder flash, factory sealers, and even contamination from simple air in the systems. Aside from the factory issues that they own up to, they claim that the "air in the system" problem is poor maintenance on the part of owners who let the coolant level get too low. Probably true, but I've never see that problem with any other anti-freeze. FWIW, the problems appear to be with DEXcool/Havoline only, not all carbo organic acid products. YMMV. Use at your own risk. Also, folks here seem to be grouping anti-freeze into only two categories. There are actually 3 or 4 major categories. One is the EG w/high silicate products that are not recommended (by most manufacturers) in any recent vehicle. Next are the EG Hybrid Organic Acid Technology products like Valvoline G05. These are recommended by Ford, Chrysler/Damlier, and some European manufacturers. They contain low (not no) silicate, and low or no phosphate. They are an easy conversion from EG products without a lot of contamination issues. Last are the Carbo Organic Acid products like Dexcool. These are no-silicate and no-phosphate but may have some problems (Dexcool definitely has problems). Conversion requires a serious flush and contamination is a major concern. There is a fourth category - the Nissan/Honda no silicate products. I haven't been able to find an MSDS on these so I can't tell you exactly what they are composed of. I suspect they are a HOAT but I don't know what the anti-corrosion package is. Don't read a lot into actual colors, they are not that definitive. |
Re: Some ruminations on antifreeze
On Thu, 15 Jan 2004 21:51:52 GMT, "markjen"
<mark.jennings4@comcast.net> wrote: >I believe such problems also occur all the time with conventional "green" >AF's, the introduction of Dexcool just was a convenient whipping boy for the >types of cooling system problems that occur in cars all thetime. But >neither of us have hard data, so not worth taking further. > >- Mark Sorry, you're wrong. There is hard data. *GM* admits this in a variety of FACTORY bulletins concerning issues with contamination from solder flash, factory sealers, and even contamination from simple air in the systems. Aside from the factory issues that they own up to, they claim that the "air in the system" problem is poor maintenance on the part of owners who let the coolant level get too low. Probably true, but I've never see that problem with any other anti-freeze. FWIW, the problems appear to be with DEXcool/Havoline only, not all carbo organic acid products. YMMV. Use at your own risk. Also, folks here seem to be grouping anti-freeze into only two categories. There are actually 3 or 4 major categories. One is the EG w/high silicate products that are not recommended (by most manufacturers) in any recent vehicle. Next are the EG Hybrid Organic Acid Technology products like Valvoline G05. These are recommended by Ford, Chrysler/Damlier, and some European manufacturers. They contain low (not no) silicate, and low or no phosphate. They are an easy conversion from EG products without a lot of contamination issues. Last are the Carbo Organic Acid products like Dexcool. These are no-silicate and no-phosphate but may have some problems (Dexcool definitely has problems). Conversion requires a serious flush and contamination is a major concern. There is a fourth category - the Nissan/Honda no silicate products. I haven't been able to find an MSDS on these so I can't tell you exactly what they are composed of. I suspect they are a HOAT but I don't know what the anti-corrosion package is. Don't read a lot into actual colors, they are not that definitive. |
Re: Some ruminations on antifreeze
On Thu, 15 Jan 2004 21:51:52 GMT, "markjen"
<mark.jennings4@comcast.net> wrote: >I believe such problems also occur all the time with conventional "green" >AF's, the introduction of Dexcool just was a convenient whipping boy for the >types of cooling system problems that occur in cars all thetime. But >neither of us have hard data, so not worth taking further. > >- Mark Sorry, you're wrong. There is hard data. *GM* admits this in a variety of FACTORY bulletins concerning issues with contamination from solder flash, factory sealers, and even contamination from simple air in the systems. Aside from the factory issues that they own up to, they claim that the "air in the system" problem is poor maintenance on the part of owners who let the coolant level get too low. Probably true, but I've never see that problem with any other anti-freeze. FWIW, the problems appear to be with DEXcool/Havoline only, not all carbo organic acid products. YMMV. Use at your own risk. Also, folks here seem to be grouping anti-freeze into only two categories. There are actually 3 or 4 major categories. One is the EG w/high silicate products that are not recommended (by most manufacturers) in any recent vehicle. Next are the EG Hybrid Organic Acid Technology products like Valvoline G05. These are recommended by Ford, Chrysler/Damlier, and some European manufacturers. They contain low (not no) silicate, and low or no phosphate. They are an easy conversion from EG products without a lot of contamination issues. Last are the Carbo Organic Acid products like Dexcool. These are no-silicate and no-phosphate but may have some problems (Dexcool definitely has problems). Conversion requires a serious flush and contamination is a major concern. There is a fourth category - the Nissan/Honda no silicate products. I haven't been able to find an MSDS on these so I can't tell you exactly what they are composed of. I suspect they are a HOAT but I don't know what the anti-corrosion package is. Don't read a lot into actual colors, they are not that definitive. |
Re: Some ruminations on antifreeze
On Thu, 15 Jan 2004 21:51:52 GMT, "markjen"
<mark.jennings4@comcast.net> wrote: >I believe such problems also occur all the time with conventional "green" >AF's, the introduction of Dexcool just was a convenient whipping boy for the >types of cooling system problems that occur in cars all thetime. But >neither of us have hard data, so not worth taking further. > >- Mark Sorry, you're wrong. There is hard data. *GM* admits this in a variety of FACTORY bulletins concerning issues with contamination from solder flash, factory sealers, and even contamination from simple air in the systems. Aside from the factory issues that they own up to, they claim that the "air in the system" problem is poor maintenance on the part of owners who let the coolant level get too low. Probably true, but I've never see that problem with any other anti-freeze. FWIW, the problems appear to be with DEXcool/Havoline only, not all carbo organic acid products. YMMV. Use at your own risk. Also, folks here seem to be grouping anti-freeze into only two categories. There are actually 3 or 4 major categories. One is the EG w/high silicate products that are not recommended (by most manufacturers) in any recent vehicle. Next are the EG Hybrid Organic Acid Technology products like Valvoline G05. These are recommended by Ford, Chrysler/Damlier, and some European manufacturers. They contain low (not no) silicate, and low or no phosphate. They are an easy conversion from EG products without a lot of contamination issues. Last are the Carbo Organic Acid products like Dexcool. These are no-silicate and no-phosphate but may have some problems (Dexcool definitely has problems). Conversion requires a serious flush and contamination is a major concern. There is a fourth category - the Nissan/Honda no silicate products. I haven't been able to find an MSDS on these so I can't tell you exactly what they are composed of. I suspect they are a HOAT but I don't know what the anti-corrosion package is. Don't read a lot into actual colors, they are not that definitive. |
Re: Some ruminations on antifreeze
markjen wrote:
>>I've seen problems with cooling systems of all types, but I never saw >>green EG antifreeze turn to brown mush the consistency of mud. > > > You realize that Dexcool is almost all EG also, don't you? The only > difference between conventional EG and Dexcool is an organic acid corrosion > inhibitor package instead of the typical phosphate, silicate corrosion > inhibitor package. Yup. > I don't see any mechanism where a slightly different > corrosion inhibitor package could take 8-qts of coolant and turn it into > mud. I see no reason that changing the additive package couldn't have a huge effect on how the coolant behaves in a closed system. I've seen pictures of the insides of engines (GM engines for which the crap was recommended and nothing else ever used) filled with the muddy residue. Links to them have been posted on this newsgroup (rec.autos.tech, which is where I'm reading this). |
Re: Some ruminations on antifreeze
markjen wrote:
>>I've seen problems with cooling systems of all types, but I never saw >>green EG antifreeze turn to brown mush the consistency of mud. > > > You realize that Dexcool is almost all EG also, don't you? The only > difference between conventional EG and Dexcool is an organic acid corrosion > inhibitor package instead of the typical phosphate, silicate corrosion > inhibitor package. Yup. > I don't see any mechanism where a slightly different > corrosion inhibitor package could take 8-qts of coolant and turn it into > mud. I see no reason that changing the additive package couldn't have a huge effect on how the coolant behaves in a closed system. I've seen pictures of the insides of engines (GM engines for which the crap was recommended and nothing else ever used) filled with the muddy residue. Links to them have been posted on this newsgroup (rec.autos.tech, which is where I'm reading this). |
Re: Some ruminations on antifreeze
markjen wrote:
>>I've seen problems with cooling systems of all types, but I never saw >>green EG antifreeze turn to brown mush the consistency of mud. > > > You realize that Dexcool is almost all EG also, don't you? The only > difference between conventional EG and Dexcool is an organic acid corrosion > inhibitor package instead of the typical phosphate, silicate corrosion > inhibitor package. Yup. > I don't see any mechanism where a slightly different > corrosion inhibitor package could take 8-qts of coolant and turn it into > mud. I see no reason that changing the additive package couldn't have a huge effect on how the coolant behaves in a closed system. I've seen pictures of the insides of engines (GM engines for which the crap was recommended and nothing else ever used) filled with the muddy residue. Links to them have been posted on this newsgroup (rec.autos.tech, which is where I'm reading this). |
Re: Some ruminations on antifreeze
markjen wrote:
>>I've seen problems with cooling systems of all types, but I never saw >>green EG antifreeze turn to brown mush the consistency of mud. > > > You realize that Dexcool is almost all EG also, don't you? The only > difference between conventional EG and Dexcool is an organic acid corrosion > inhibitor package instead of the typical phosphate, silicate corrosion > inhibitor package. Yup. > I don't see any mechanism where a slightly different > corrosion inhibitor package could take 8-qts of coolant and turn it into > mud. I see no reason that changing the additive package couldn't have a huge effect on how the coolant behaves in a closed system. I've seen pictures of the insides of engines (GM engines for which the crap was recommended and nothing else ever used) filled with the muddy residue. Links to them have been posted on this newsgroup (rec.autos.tech, which is where I'm reading this). |
Re: Some ruminations on antifreeze
You've done a good job reviewing the AF picture. It is unfortuate that it
has gotten so unbelievably complicated confused. I think the car mfgs have decided to reap some money out of this confusion by relabeling common AFs with their labels and charging double. Again, I think most of the hysteria is urban legend and blaming AF on other problems. Put any AF in a couple million vehicles, some with serious engine and cooling system problems, and you're going to have a few that look pretty bad. The same thing occured with synthetic oil and it's occuring with AF. Installed properly and changed regulary, use whatever you like and the chances of problems is vanishingly small. Just like oil. - Mark |
Re: Some ruminations on antifreeze
You've done a good job reviewing the AF picture. It is unfortuate that it
has gotten so unbelievably complicated confused. I think the car mfgs have decided to reap some money out of this confusion by relabeling common AFs with their labels and charging double. Again, I think most of the hysteria is urban legend and blaming AF on other problems. Put any AF in a couple million vehicles, some with serious engine and cooling system problems, and you're going to have a few that look pretty bad. The same thing occured with synthetic oil and it's occuring with AF. Installed properly and changed regulary, use whatever you like and the chances of problems is vanishingly small. Just like oil. - Mark |
Re: Some ruminations on antifreeze
You've done a good job reviewing the AF picture. It is unfortuate that it
has gotten so unbelievably complicated confused. I think the car mfgs have decided to reap some money out of this confusion by relabeling common AFs with their labels and charging double. Again, I think most of the hysteria is urban legend and blaming AF on other problems. Put any AF in a couple million vehicles, some with serious engine and cooling system problems, and you're going to have a few that look pretty bad. The same thing occured with synthetic oil and it's occuring with AF. Installed properly and changed regulary, use whatever you like and the chances of problems is vanishingly small. Just like oil. - Mark |
Re: Some ruminations on antifreeze
You've done a good job reviewing the AF picture. It is unfortuate that it
has gotten so unbelievably complicated confused. I think the car mfgs have decided to reap some money out of this confusion by relabeling common AFs with their labels and charging double. Again, I think most of the hysteria is urban legend and blaming AF on other problems. Put any AF in a couple million vehicles, some with serious engine and cooling system problems, and you're going to have a few that look pretty bad. The same thing occured with synthetic oil and it's occuring with AF. Installed properly and changed regulary, use whatever you like and the chances of problems is vanishingly small. Just like oil. - Mark |
Re: Some ruminations on antifreeze
On Sat, 17 Jan 2004 00:00:05 GMT, "markjen"
<mark.jennings4@comcast.net> wrote: >You've done a good job reviewing the AF picture. It is unfortuate that it >has gotten so unbelievably complicated confused. I think the car mfgs have >decided to reap some money out of this confusion by relabeling common AFs >with their labels and charging double. No question of that. Most of them are rather tight-lipped as to what exactly is in their "recommended" coolant. >Again, I think most of the hysteria is urban legend and blaming AF on other >problems. Put any AF in a couple million vehicles, some with serious engine >and cooling system problems, and you're going to have a few that look pretty >bad. The same thing occured with synthetic oil and it's occuring with AF. Sorry, but with Dexcool, I have to disagree. There are known problems. They are admitted to by GM, it's primary promoter. >Installed properly and changed regulary, use whatever you like and the >chances of problems is vanishingly small. Just like oil. Cars with Dexcool have showed metal corrosion 2 years after leaving the factory. |
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