So we went in to do some more research on Dex-Cool and came across this video from the engine experts over at Mahle. Crystal Clean DEX-COOL has a service life of 5 years/150,000 miles and meets ASTM D3306 performance. Crystal Clean DEX-COOL complies with GWM3420 (formerly GM6277M) specifications and is approved for warranty work at GMSPO dealer pricing for new coolant. Prestone DEX-COOL antifreeze+coolant - Ready To Use (50/50 Prediluted) is specially designed to work with All GM vehicles 1995 and newer (GM approved). When the Summit Racing folks shared the story on their Facebook page, it sparked a lot of good discussion on the topic of engine coolant, and one of the brands that stirred up some talk was GM’s Dex-Cool.ĭex-Cool Antifreeze Coolant was introduced by GM in the 1990s and promised super-long coolant maintenance cycles-but suffice it to say, the antifreeze wasn’t an immediate hit. Crystal Clean DEX-COOL is a General Motors licensed DEX-COOL Antifreeze/Coolant.

The article also discussed which engine cooling systems are compatible with the different engine coolants on the market and, perhaps more importantly, the perils of mixing them. I'm just past 100k on my Colorado and planning on flushing the system and putting dexcool back in with distilled water.A little while ago, OnAllCylinders contributor Jeff Smith penned…err…typed a very informative article on the various types of engine coolant available today. I personally haven't had any problems with dexcool as I've owned a number of Gm vehicles. Shell DEX-COOL Extended Life Antifreeze/Coolant is a single-phase, ethylene glycol based, extended life, universal automotive engine coolant based on a. Universal coolant seems to be a good way to go now days. Zerex DEX-COOL Life 5/150 antifreeze coolant is the latest long life automotive engine coolant development from Valvoline. Also the dexcool formula for GM is different from others so you have to make sure you have the correct coolant. Also we found tap water is not the way to go either so we installed a distiller to create distilled water for use in our vehicles and went to a radiator cap that has an anode attached to it. Repairs involving intake manifold gasket failures, engine coolant sealing issues, and sludge (a rust-like material) are covered by this proposed settlement. We purchased another machine and assigned one to each fluid. The technicians were using the same maching to service the vehicles so some of the other coolant was still in the machine and it was causing contamination. ACDelco DEX-COOL is an ethylene glycol based fluid that. Excessive heat is transferred via the fluid to the radiator where the mixture is cooled by means of airflow.

Also we had some vehicles that used dexcool and some others that used ethylene glycol or regular coolant. ACDelco DEX-COOL Extended Life Coolant mixed with the appropriate amount of water is used as a cooling and heat transferring fluid in combustion engines. If you are flushing a dexcool system you must flush it well. So I did a lot of research on the subject. Even the factory were struggling with the issue at the time. When I worked as the director of fleet vehicles and equipment for a governmental agency we were having a large number of heater cores, radiators, and head gaskets fail. There are much written on the subject and the reason for early failures of engine cooling components. ACDelco Dex-Cool Antifreeze Extended Life Coolant 50/50 Pre-Mixed is an orange, silicate and phosphate free, premium-grade coolant/antifreeze that is. Dexcool vs regular coolant that conversations can't even be agreed upon by engineers.

Dexcool coolant