2010 Mazda3 ATF change - When?

[cwb27]

Having a bit of a hard time getting a clear answer on this one... Dealer says "When it needs it", owners manual maintenance schedule makes no mention and the internet says "Did it cause I wanted to"....

I have 220,000 km on the car with original ATF still in her, 98% of the mileage is highway kilometers.

There's no obvious shift slippage but I'm just starting to get weirded out with still having the original fluid in.... Thoughts?

[Canadianbacon]

Yup you need to change it its probably black and will ruin it. These cars ATF should be changed way before that.

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[studum]

At that point I would do a drain and fill. Maybe a couple closed spacer than typical to get some fresh fluids in while blending with some of the old. Doing a full fluid exchange may not be the best idea with that much on it at this point.

FWIW I did a full fluid exchange at ~120,000 kms and the car loved it. I used OEM fluid

[cwb27]

Thanks guys.

For what it's worth a few months ago I did check the colour via the dipstick and it was still red. That said, I do plan on changing in the next few weeks regardless.

[cwb27]

Wow, no idea what my original post was re-posted.

Here's what I tried to say....

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Thanks guys.

For what it's worth a few months ago I did check the colour via the dipstick and it was still red. That said, I do plan on changing in the next few weeks regardless.

[cwb27]

Ugh.. nevermind, didn't realize it was putting the newest first... morning coffee hasn't kicked in yet.

[kaleshnikov]

If it's red, perfect to get it changed anyways. Go full synthetic and that's the last time you'll have to worry about it for the lifetime of your car.

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[Milan96]

If it's red, perfect to get it changed anyways. Go full synthetic and that's the last time you'll have to worry about it for the lifetime of your car.

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Agree with this, and also do it via drain and fills. If you're somewhat mechanically inclined and have the available tools, do it yourself. Pretty straight forward. There's a fantastic guide on this forum for the procedure.

[Jackal]

Change it. Got mine flushed and runs great. Drain and fill is fine too.


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