![]() ![]() Six (6) FL22 stickers are included with eachĬase of coolant. Reserve tank or degas bottle to indicate FL22 coolant is being used. If FL22 coolant is used for older models, be sure to place a FL22 sticker on the When coolant replacement becomes necessary for older Mazda models not originally filled with FL22 coolant,įL22 coolant can be used. ok, according to this TSB, the FL22 goes back to at least the 06-08 MX5 (miata). however, this just started showing up in the 2007 Mazda products. Mazda's current fluid is FL22, which i have read is supposed to be P-OAT similar to the Asian Zerex. this is supposed to be the second generation P-OAT coolant. Which states that it is good for all asian vehicles (including Mazda) irregardless of year. that's the first problem i have, as there was (to my knowledge) no change in the NB in 1996-1997, so why the dividing line? The miata 1990-1996 should use HOAT (G-05) coolant, and post 1996 should use DexCool. My problem here is that according to the zerex chart, Has done some research here as well, i went back and read some of his posts. I use it in an OTM (Chrysler) anyway.įor all the nit noys about the various chemistries I'll refer you to BITOG's forum discussions because my recommendations and this discussion are largely based on what I have read there. When I change from my current charge of Deathcool, as it is often called I'll likely go with Zerex G-05 HOAT chemistry. I recommend the POAT chemistry but in Zerex right now it is only available in 50/50 mix! How do you flush and change to 50/50? You'd have to totally drain the block. I think despite its shady past Dexcool is OK but can be beat and last is the universal green but only if changed often, real often. I said three but the Dex and Peak Global, I'll call one.īottom line, I think any of the POAT chemistries (Zerex Asian) or HOAT chemistries (Zerex G-05). The third is the HOAT formula recommended for older Mazdas despite its being a more modern coolant and the forth is Zerex Asian formula. It may well have some of the same stuff that attacked plastics and gave the Dexcool it's bad name and has been called a Dexcool clone. Dexcool though recommended by Zerex for later Miatas, it has enough bad reviews, much of which is unwarranted, I will likely pass next time though that's what I'm using now and "I have had no problems", see I told you. I think it boils down to three chemistries: I'll talk Zerex but they are available otherwise. Like most stuff we speak of here there is a lot better available than the "universals" that dominate the stores, however, but I haven't totally for myself what it is. If a lot of folks participate here you'll get a lot of the, "I use the xxxx stuff (mostly green) and have no problems", and if they change it regularly, I think they are right. Most of the bad is concerns with some GM plastic gaskets and corrosion issues if the coolant is allowed to get air in it. ![]() ![]() If you do any research on Dextron you'll get quite an earful, not much of it good. '96 on Zerex recommends, believe it or not, their Dextron clone. The Zerex recommendation for Miata's up to '96 is their HOAT chemistry which is Chrysler and recently Ford's recommendation as well. Though obviously Zerex (Valvoline) oriented, I think it of some value. The Zerex site has recommendations as well. Bob is the oil guy.com has a whole section on this very subject and, though it's not Mazda specific, it makes for interesting reading. I have been deliberating over this myself. ![]()
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