a new class of inhibitors, called organic acids. Examples of U.S. brands with these organic acids: Havoline Dex-Cool and Prestone Extended Life, both recommended for five years or 150,000 miles.
answered 2 years, 6 months ago
Stick with the Dex-Cool. I put a one type fits all (Prestone) anti-freeze in my Cadillac and within an hour a hose blew off. It didn't overheat or anything, but the bypass hose popped off. I put the hose back and replaced the Prestone universal with Prestone Dex-Cool and have never had another problem.
One note if your GM vehicle recommends an additive use it. It is an acid neutralizer and stop leak and it really works. I don't have the part number, but it is in pill form and contains Sal Soda, Turmeric and walnut shell powder--believe it or not--and it is really is good stuff. My Cadillac owners manual stipulates that it be used or the warranty is voided. They may not recommend it for all GM vehicles. It seems that they use it for engines that have aluminum and iron combinations.
answered 2 years, 8 months ago
I would/and have replaced my dexcool. I used 2 gallons of new dexcool, and I have a gallon of universal for the occasional top-off. By the way my origional dexcool lasted 10 yrs! Good luck, Donnie
answered 3 years, 4 months ago
- harrisburg, il
I am having the leaking intake issues on a Chevy van. Don't know if I didn't replace the Dexcool in time or mixed with the extended and caused the problem. I am nursing it along and will replace with DEX-Cool when the gaskets are replaced. Why chance it. Change ALL fluids on time with the correct type and don't worry about it.
answered 3 years, 7 months ago
hello jesse i ran into this dexcol issue in febuary
since you can add prestone extended life to any color coolant, id use prestone extended life, i heard horror stories of dexcol eating at intake gaskets. i replaced my gaskest and flushed system, and only use green prestone extended life. so you will know for later since your question is a month old you probably already made a desision, but if you didnt already switch to green id do it as soon as u can do not wait 5 years as it breaks down much faster than dexcool states. goo luck i love my buicks
answered 3 years, 11 months ago