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post #5 of (permalink) Old 04-13-2019, 01:42 PM
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Originally Posted by tickerguy View Post
I would change the ATX fluid and filter. I like 50k mile intervals on that for both ATX and MTX. ATXs are gawd-awful expensive if/when they fail, fluid and filters are cheap. Don't believe for a second that "lifetime" fluid means any longer than the life of the now-dead transmission. This is a "must use Mazda's fluid" deal as well.

Other than that, and routine stuff (e.g. oil filter and changes; use the Mazda filter) there's not much. They're remarkably stable vehicles in terms of not needing anything special when it comes to maintenance and similar.

At 100k I would change both stretchy and serpentine belts; they're cheap and if you break either you'll be quite annoyed changing them on the side of the road. The stretchy belt drives the water pump; break THAT one and you're stopping NOW, not when you find a convenient place. I would also do the coolant since you'll be at ~5 years as well around that point; use FL-22 (it's on the cap.) In addition plugs are something I've done at 60k twice but frankly they were probably good for 100.
I'm with tickerguy for all his recommendations. I drank the "lifetime fluid" Kool-Aid until 80K miles and decided to change it and I'm glad I did. The amount of metal particulate on the pan magnet was terrible and fluid was definitely at the stage of needing changed. I did not use the OEM fluid, instead I used the Valvoline ATF Max-Life. I noticed improved shifting after changing fluid and filter.
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