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Hey everyone.
I have a 2010 Mazda cx9 AWD that I need to replace the coolant on. Now it’s meant to have FL22 coolant as stated on the radiator cap but I’m sure there’s plenty of cheaper options.
The owners manual says never use a coolant with silicates or borates but the ones I’ve been able to find online apparently aren’t recommended for my car.
I have been looking at the 2 coolants below which are both recommended when I searched using my rego number. I’m in Australia btw.
Drain out the coolant & fully flush the cooling system with water. Fill the system up with water, drive it around, let it cool down, drain & flush again. Using Penrite greenconcentratecoolant, add the whole bottle & top up with water if needed while bleeding system.
Thanks for the reply. After ringing the local radiator specialist yesterday and getting their advice too, I’m just going to go with the Penrite coolant. I’m replacing the thermostat anyway so a full flush is on the cards. Thanks again for your advice.
Cx9 cooling system
