Then the older IAT coolant is green. Well, antifreeze and engine coolant are similar, but not the same. Antifreeze is a concentrated, glycol-based liquid that must be diluted with water before use — at which point it is referred to as coolant. Engine coolant is a mixture of antifreeze and water, with a common ratio of Can you mix different brands of coolant? The answer to you can mix different coolants with each other is more complex than it sounds.
You have to not consider the color of the coolant, but the type of coolant and what type of engine you do have. The question that needs to be asked is did you check the level in the tank with the engine hot or cold? Since it was low I am guessing that it was cold, so just fill it up to the minimum level. DO NOT overfill, as this could damage the entire cooling system when the antifreeze gets hot.
Yes, you have to use dex-cool in a system that requires it most GM vehicles. However, different manufacturers make Dex-Cool fluid. Skip to content Popular. April 24, Joe Ford. The wife's Buick's cooling system is all sludged up and its intake manifold gaskets may be leaking a little. I just may put the green stuff in after flushing it.
This great TDI list clued me in to the cause - Dexcool-. Before that I was totally baffled as to what was causing the sludging.
Careful, though, to do a thorough flush out of the orange dexcool-- if the dexcool mixes with green coolant you will really get some gooey stuff. Thanks for this post. It reminded of a nightmare I had last night where I was accidentally putting green stuff in my Jetta.
I woke up in a cold sweat. I was also curious about the option of replacing the G12 coolant with something a little more affordable; so, I visited the Prestone website and performed a little research. Prestone indicates that many European car makers recommend phosphate and silicate free coolant, such as G12, due to the mineral content of European water, which has been known to result in heavy corrosion when mixed with this type of coolant.
Prestone states that this has not been an issue in the states because our water supplies do not contain this particual combination of minerals; and, as such, recommends their universal coolant which looks oddly like standard ethylene glycol - AKA the green stuff. My thought is that a proper flush of the cooling system, followed by a switch to standard ethylene glycol coolant might yield acceptable results.
Honestly, the engine components i. This being said, I'm still not sure that I'm ready to put my money where my mouth is without further research.
Last edited: Nov 19, Zero scurvy said:. You woke up in a coolant sweat? You should really watch what you eat. My experience with DEXCool has not been good either. The coolant has a high content of calcium carbonate, I think. Everywhere it seeps it builds up. And where it builds up it also seems to corrode the aluminum fittings. However, my worse problem is that it has either plugged my heater core or done other things, such as break down the plastic swirlers inside; so that my heater output is much dimenished.
I have never found any corrosion inside an engine from using it, and it has not caused any other problem. Did lots of research first. I will say that Dex sludges badly They exhibit a lack of heat clogged core. Imagine that. That is some of my Dex experience from my years at a GM dealership. I actualyy have seen buildup problems from that.
Not on the Dexcool magnitude, but definately heavy sludge buildup. I have tested coolant as low as here real temps, windchill not counted and found excellent flow ant no crystallization.
Of course if you have a leak, why wouldnt you fix it? No topping is ever necessary if no leaks are present. I will say that strong concentrations of G12 have caused a minor problem. In winter, it seems to shrink more and cause the coolant lamp to flash till the car warms up.
If I had a dime for every car that came in for that especially new ones. Chemically they are interchangeable. Including additive packages. I also have some of the Prestone "mix with any coolant" for use in older cars with checkered histories.
Just my take. LanduytG Vendor. The old 6. Same for the new sytle 4. But the class action is only on vehicles with certain motors built in certain years. The problem is some motors trapped air and when that happen you get big time cud.
I do only use G12 in any VW I work on only because I don't want to mess with giving it the flush that woould be needed to change over. You must log in or register to reply here. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
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