Most conventional coolants use inorganic compounds to prevent corrosion (IAT). The difference between coolants is not the EG they contain, but the corrosion inhibiting package.ĭexcool uses organic acids (OAT). If you are able to access the inlet heater hose on your vehicle, we recommend that you use one of the cleaners and then backflush the system.ĮG for life.Dexcool IS ethylene glycol (EG)!Īll coolants use ethylene glycol (except the pet-safe ones, which are propylene glycol (PG)). This backflush will remove more deposits than the chemical cleaner alone. This kit fits some cars and most light trucks. Prestone® products also offers a Flush N' Fill Kit for backflushing the cooling system. Note: Once the desired amount of concentrated antifreeze/coolant has been installed, the cooling system must be topped off with water to ensure a complete fill. Example: If the owners manual of your vehicle indicates that the capacity of the cooling system is 8 quarts, then you need to install 4 quarts of pure antifreeze. This is easily accomplished if you know the capacity of the cooling system. At this point, use a mix of 50% to 70% Prestone® Antifreeze/Coolant and water. If the directions on each of these cleaners are followed correctly, the end result will be an empty radiator and mostly water in the engine block and heater core. Use Prestone® Super Radiator Cleaner to remove corrosion and lime scale. We recommend the following: Use Prestone® Super Flush for routine maintenance. All of these cleaners are compatible with the cooling system components of any vehicle. Prestone® offers several flushes that are designed for everything from routine maintenance to lime or rust scale. Using a chemical flush prior to the fresh fill of antifreeze/coolant is an effective way to remove deposits from the cooling system. How do I flush my cooling system and install a fresh fill?Ī. Take a garden hose and fill it with water and let the water flush out any remaining coolant. Wait so the engine is not burning hot, drain the coolant while the thermostat remains open. Drive the car around at operating temperature.Ģ. Fill with distilled water/Dex-cool mixture.ġ. Fill the cooling system with distilled water and a radiator flush, bleed, drive around for 1-2 days.ģ. I read a VW TSB that said upgrading to G12 from G11 meant completely flushing the system before b/c G11/G12 mixing makes a gunky mixture.Ģ. My question is what are some ways to completely FLUSH (not bleed) all the green generic coolant in my M42? I want to flush every last drop of coolant out in my M42. I'm pretty sure I can do the same for the M42 since BMW coolant is equivalent and it is much cheaper and less likely to clog/gunk up our coolant system. I upgraded to a cheap off the shelf alternative to G12 called "Prestone Dex-Cool" in my '95 GTI VR6. Since the switch to OBD2, many manufacturers have switched to a phosphate AND silicate free coolant. The BMW coolant we use in our E30's from the dealer is equivalent to VW's G11 (Blue coolant), which is phosphate free. I have some generic green coolant in my M42 and I don't want it there anymore.
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