Also, it finds leaks where typically none previously occurred. ![]() Dexcool can cause problems if installed in a leaky system, or if it is used in a system run low on coolant. Residual amounts of conventional coolants left in the system even after careful draining require that the Dex-Cool be changed at the same interval as any other coolant, every two years. Dex-Cool, according to a GM service bulletin only gives the extended life when it was used as the first and only coolant in the car. But no coolant provides perfect protection Conventional American coolant should provide better protection against solder corrosion, which can result in radiator tube restrictions and leaks. Or, if it's an older car and the owner wants the lowest-cost radiator, you might procure a soldered-together copper-brass unit. If you have to change a radiator or heater core, use aluminum. Results of industry standard tests of the new Toyota extended-life coolant now show a substantial weight loss (corrosion), both in a 50-50 mix and in a 33% coolant mixture (solder corrosion is much greater in this more diluted solution). We have in previous articles pointed out that today's coolant inhibitor packages contain a small amount of copper-brass protection, but may provide little protection if a radiator is made with high-lead solder. One of the coolant issues that may arise is the use of an aftermarket replacement radiator or heater core made of copper-brass with lead solder. (Warning: Do not use DEX-COOL with Cooling System Seal Tabs, Radiator Fast Flush or Radiator Stop Leak.) Although it won't damage your car's cooling system when mixed with other coolants, DEX-COOL will lose some of its effectiveness. Note: DEX-COOL's unique orange color acts as a reminder not to mix the new formula with conventional coolant (usually green in color). DEX-COOL's benefits include: Lower maintenance costs, due to longer change intervals enhanced component durability - improved water pump seal performance and superior heat exchanger protection over regular-life coolants recyclability. Conventional coolants need to be replaced every two years/30,000 miles. Neon orange in color, the coolant lasts up to five years or 150,000 miles, whichever comes first. This is your best bet, but it is tougher to find. Much as to precipitate out, and in addition uses an OAT package. Of silicates to improve corrosion protection for lead and aluminum, but not so The last Glysantin alternative is new in the US, although well-known in Europe,Īnd may be the optimal replacement coolant for Volvo. To the "min" mark on the reservoir, it may cause scaling and rust precipitation. Dexcool is known to have problems with high-lead solders, and is also sensitive Positive with one exception: the solder in a Nissen brass radiator began leaking
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