AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |
Back to Blog
Using dexcool coolant in a audi8/27/2023 ![]() Isn't DexCool the special coolant, and isn't it orange? Yes to both questions, but Chrysler Group says don't use DexCool in its products. Lift the hood of a Chrysler product and you'll see orange coolant in the jug and a "special engine coolant only" warning on the cap. It cautions "don't use orange," but the factory-installed coolant is orange. Lift the hood of another Ford product (in this case, a Taurus with the pushrod V6) and you'll see that same label, but the jug contains orange coolant. Sounds pretty straightforward, right? It isn't. In pictorial language it says "Do not use orange coolant yellow coolant is okay." Lift the hood of a new Ford vehicle and you're likely to see a yellow coolant in the overflow jug and an interesting label on it. "With so many different coolants out there, it's important-make that essential-to know what's safe to put in where, and when. Glopping from mixing with air when leaks occur, corroded waterpumps that kill timing belts (my theory) and radiator seams being "plasticized" by 2-EHA. So, that's 3 reasons not to use these types of coolants. However, **to extend gasket life and protect the water pump impeller and chamber, it wouldn't be a terrible idea to flush the system and switch to a coolant with phosphates and/or silicates (conventional American or G-05)** at this point."Īt the rate our water pumps and radiators fail and supposedly owners and dealer techs find gloppy coolant, I'd take a hard look the info on Dex-Cool situation because the Audi/VW coolant is the same stuff and we have the same problems. The engine already has been protected with DexCool (unless there's an assembly line change in the works) and it's reasonable to install that when you service that engine. "We can't tell you how this dispute is going to play out, but you do have to make a choice when it's time to change. ![]() Quote from the article in regards to Honda engines filled at the GM Saturn factory with Dex-Cool (The inhibitor 2-EHA is specificly excluded from Honda's coolant, but it's a plasticizer in Dex and G-12 that eats through seals) It has the longest succesfull track record and is used in the same exact parts brands (radiators and waterpumps) that Audi uses. Service the system with a flush and fill of either one, Generic Dex-approved is the best deal and works the same with NO COMPATIBILITY ISSUES.ģ) My main point is to skip these two, Dex and G-12 for Mercedes' G-05 Hybrid OAT. Also, air is getting into the system, a know glop-producing problem with these types of ORGANIC ACID TECHNOLOGY coolants. However, low coolant levels indicate there is another problem that must be looked at. If my writing seems better than usual, I'm trying to close this issue (and get a tech article, wink)īesides the compatibility of mixing G-12 and Dex the points that I tried to get across before were.ġ) For a full flush and refill, Dex is good (enough) because it consists of the same family of ingredients and formulations that are used to make Dex-Cool.Ģ) For topping-off, Dex is fine as a temporary boost to the G-12. No need for me to revisit the issue of mixing G-12 and Dex-Cool and this should put the issue to rest. I don't actually know enough about G-12 Plus to comment further, but I am skeptical that the only difference is the ability to mix G-11 (Olde Prestone) and G-12 (Nu Prestone) I think it's a G-05 clone. Thus there are variations and discovering the "One" actual formlua for G-12 is somewhat meaningless. Water quality varies around the World from soft to hard and coolant formulations are tweaked to deal with that including G-12, so they vary slightly depending on where they are intened to be used. This makes it easier to understand how a coolant can be recommended for both Dex-Cool and G-12. "GM and VW/Audi vehicles: For these applications, use DexCool because that's **in accordance with factory coolant formula recommendations**"ĭex-Cool is not a specific formulation, but a test protocol that a given coolant must pass in order to licence the name. This is in-line with what I have been told elsewhere. Most relavent is the recommendation of generic Dex-Cool as top-off for VW/Audis (G-12). It's from 2 years ago, this year's Cooling Issue had no signifigant developments to report. My previous link to this article was lost on my old computer, and my dog ate the print version with the interesting pics of fully corroded (Dex-Cooled) water pumps.Īnyway, here is a good reference article written by serious in-trade publication, MOTOR Magazine.
0 Comments
Read More
Leave a Reply. |