I do give 'em credit for assuming full responsibilty, though. I'm not excusing what your friend's dealer did, but I can certainly understand how it could've happened. Further complicating the picture is that the Zerex-branded G-05 you can buy as back fill is hardly dyed at all! Once diluted 50/50, it's hard to visually discern that any antifreeze/coolant is present. There are just entirely too many opportunities to replace the wrong fluid into a cooling system not designed for it. Honda's own extended life fluid is green, but it's not traditional "Prestone"-type green fluid. Chrysler's "G-05" HOAT fluid is also orange. (This antifreeze/coolant dye business has gotten completely out of hand. In neither case are these two extended life fluids compatible with the traditional "Prestone"-type "gell-of-death" green stuff. The HOAT extended life antifreeze/coolant Chrysler products are using these days is also dyed orange, but, it's not DEXCOOL (actually, Zerex G-05 in all but name), so it's confusing. Any help or knowledge in this matter would be appreciated.ĭEXCOOL is orange, not red. My advice: Drain it, put in straight green and water, and whatever you do, stay away from dex cool, its garbage.
What should my friend look out for? Are there any long term effects in a Cummins when this happens? Has anyone heard of a chemical to stop the gelling reaction when mixing the two coolants? The dealer made it sound like this happens often and hence the special chemical to stop the gelling effect. However you can mix plain green with toyota red (pretty much same formulation, toyota might have a couple non-harmful addives). They took full responsibility for the screw up, but here is where we need some help.
Needless to say, the truck is still not running at its "normal" temp and is back at the dealers today. The dealer up North had a special chemical flushed through the system that was supposed to neutralize the gelling and get everything back to normal. I think that Dodge made the switch in 2003 for the Cummins, but not 100% sure. The truck had green coolant and the Bay Area dealer added red coolant (dex-cool I believe). He had the truck towed to a local Dodge dealer who diagnosed the problem as mixing of coolant types. Upon opening the radiator cap, he was shocked to find that the fluid had turned into a thick, vaseline like consistency. He let the truck cool down enough to check the fluid level. The upper radiator hose was sucked together (collapsed). (This truck never runs hot, especially nearly empty at highway speeds) He pulled over and popped open the hood. Just past Redding California, the trucks temp gauge started to go up into the 215 - 220 range. He just had the dealer service the truck (including coolant) the day before the trip. My friend was travelling in his 2002 Dodge Cummins 3/4 ton from San Francisco Bay area to Washington.
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