Antifreeze OEM Mazda or OEM Honda

You want the very best you gotta go Honda blue.

Nothin better than that OEM Honda

I have looked at the additive packages on all Honda compatible coolants. Many other manufacturers (Toyota, Ford, Hyundai, Mazda, Subaru) have switched to similar coolants that are slightly worse than Honda coolant. Honda has the strictest requirements for their engines that they refused to give their engines to GM for Saturn cars after GM said they will require GM coolant. Here are my rankings:

1) Honda Type 2 (OEM) Coolant Best OEM coolant Has about the same Diethylene Glycol and anti corrosion and detergent additives

I recently changed the coolant in my 2020 CX-5 with genuine Mazda prediluted FL22. The reason I change the coolant is corrosion protection. The corrosion inhibitors in coolant deplete with both time and mileage. Many aftermarket coolants may not be formulated with the identical corrosion protection chemical strategy found in the Mazda FL22 coolant. Using an aftermarket coolant is a risk I am not willing to take. My cooling system remains safe from corrosion. Using my schedule I will not have coolant and internal corrosion issues for as long as I own my car. Peace of mind is worth it to me.

I’ve never ever seen OEM Honda coolant even remotely dirty, sludged or have insufficient protection even after 100k miles.

For Coolant OEM Honda the blue stuff is perfect it's almost like it's made for the car.

The correct coolant is Honda longlife which is blue. Someone has already put \"all vehicle\" green stuff in it, which will keep it cool just fine but not provide as much corrosion protection over the long term. The factory Honda coolant is designed to run for 120,000 miles; this stuff is good for maybe 30-50k before it should be changed.

Last time I priced FL 22 at the Mazda dealer it was about the same as AutoZone I was surprised I thought it would be considerably more.

Mine went 11 years with not as much as a check and it came out perfectly the same as the new stuff going in.

I noticed a coolant leak the other week and bang - this was the exact issue.