Oct 10, 2013 · You can mix the two. Even the SAE says you can mix the two. Valvoline, Prestone, Peak, Autozone, NAPA, and O’Reillys all have green coolant labeled “works with any make and model” and “mixes with any coolant”. The antifreeze does not jelly. Mixing them can lead to reduced effectiveness of corrosion inhibiting additives and thats all.
Would Prestone work fine in my TJ's radiator as well as the Mopar antifreeze from the dealer? I do not want to take any chances and I wanted to be safe before I begin replacing the antifreeze fluid. Also, can I drain the radiator using that plastic twist off drain plug t the bottom of the radiator (driver's side)? Thanks. Prestone is guaranteed for all cars and can be mixed with any other colour of coolant/antifreeze. You can use it to top up your car or to refill the cooling system after you¿ve drained and flushed it. Ready to use formula makes it easy for you to top up Jan 03, 2016 · If half the system is green and you add 2 gallons of gold in a 50/50 mix to a 3 gallon system it is a crap shoot but usually it will stay green if all things are equal in a perfect world. Domestically speaking there are 2-3 major manufactures of engine coolant, including the heavy truck market.
OEM is dedicated to matching you to the right antifreeze/coolant for your vehicle. Some formulations like Dex Cool, Prestone and Peak are for all makes and all models. OEM coolant is different. We’re not one-size-fits-all. We’re automotive experts dedicated to creating antifreeze designed for all engine types, including diesel.