"I did some searching and I think American green contained benzoate an OAT as does G-05."..Mechanicx..are you saying that at least some "new green" formulas now contain benzoate..the reason I ask..is that the Havoline green coolant is still "low silicate" but no longer contains amines (nitrite/borate)and phosphates..what have they replaced these older type of inhibitors with..?
I don't know that any of the new Green formulas contain benzoate for certain. Benzoate is an inhibitor that has been around awhile and has been used in American green coolant.
Where did you see that Texaco green anti-freeze doesn't contain phosphate? I'd think Texaco green still has phosphates. I don't think phosphates are amines. American green coolant contains phosphates. I'm not sure that amines have even been used in antifreeze for awhile. Green does not normally have nitrites since it not formulated for diesels. For diesel use you would need to add the SCA that has nitrite. Green also had borates but that can be replaced with potassium hydroxide, just as asian formula does that. Molybdate is an excellent IAT that they might have added. So as far as I can tell Texaco just switched KOH for borate.
Texaco Heavy duty doesn't have phosphates because it's for heavy-duty diesels and at least one HD manufacture doesn't allow phosphates. It has nitrites though.
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I went to the ford dealer to pick up some parts along with some coolant for my daughters car,.. this is what was handed to me...
http://www.alexisoil.com/pdf/Texantifreeze.pdf the parts guy said that this coolant is used outside of warranty in all applications to keep costs down...
That is Texaco's American Green formula. I don't know why that Ford dealer would be saving much over using Zerex G-05. I can get G-05 full strength at NAPA for about $10/gal. Maybe they are using it in lieu of stocking Ford Green but still they could get Zerex Green. They are not saving much and it would be very stupid of them to service a G-05 car with Green just to save a few pennies.
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this got me thinking about Havolines coolant web site...
http://www.texaco.com/yourcar/havolinecoolants/findRightCoolant.asp ..If havoline products were your only choice... their green coolant is recommended for all "other" cars (except dexcool/custom blend applications)including Japanese and all other Asian plus US made vehicles..old or even NEW veh....another way to interpret late model cars,(and diesels) is that if it had the "green stuff" coolant..then this "all purpose formula" is the right choice (code for universial)(does that mean some type dexclone??)..
Yes that is what Havoline is saying on that website. they are saying what I've been saying, that it's safest to avoid OAT's and Dexclones in older applications and applications that were not filled with OATs and dexclone. This Green is not a Dexclone. It is traditional IAT Green. To use it in a diesel you have to add SCA's which usually contain borate and nitrite. Texaco also makes a coolant called universal coolant that is yellow, and it is a dexclone. Again the Green is not dexclone nor fully formulated for diesels.
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No phosphates in any of the texaco/chevron products..even their low end coolants..
http://www.arteco-coolants.com and
https://cglapps.chevron.com/msdspds/MSDSPage.aspx?language=en&country=®ion=NA ..
Is possible Texaco doesn't use phosphate even in their Green. That is not really a good thing really. The thing is PDS and MSDS do not tell you the complete ingredient list. Now if Texaco Green says specifically "Phosphate free" than it is, but I have never seen anywhere that it says that specifically.
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concerning "nitrites" for heavy duty diesel useage..I am only familiar with "nitrite free" products such as..delo's
http://findarticles.com/p/articles/mi_m0EIN/is_2008_Feb_4/ai_n24245447/ or texaco's
http://www.yanmarhelp.com/images/texacoNitritefree.pdf
These are dexclones. They may not have nitrite but most HD antifreeze does. It is Texaco/Chevrons position that their coolant can protect diesels without nitrite, but that is not the position of every diesel manufacturer. That is why you have a potpouri of HD coolants out there. You have two basic kinds of HD coolants. The IAT type which contain nitrite and usally borate. Then you have the extended life coolants. Many of them are nitrited even though they are OAT. They are sometimes called NOAT.
