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Discussion Starter · #1 ·
I have a 2010 Mazda 3 Sport 2.5L. I have been doing a lot of reading on here from threads that were 5+ years old on the matter. Of course there is always the 2 beliefs of whether or not to change the transmission fluid. The car was bought brand new by my father in law for my wife, he has since passed away and I cannot ask him all the maintenance that was done (although I know he kept on it all). Recently, I have flushed out and changed the brake fluid (it was dirty as heck) and flushed and replaced the coolant. I checked the transmission fluid and it is not a slight of pink at all, it is a dark brown color. I am debating on whether or not to change the fluid, and how to go about doing it.

I was at first thinking of draining and refilling (most people say they get about 3 qts out from drain at the pan), then driving for 10 min or so. Then doing another drain and and refill. And then finally drain, drop the pan, replace filter, and then refill again. The car just turned 120,000 miles and it is an automatic transmission.

Appreciate your thoughts. Also, I was looking at where to get a new gasket and filter and stumbled upon 2 places, will the one from autozone work fine?

Duralast Transmission Filter (A/T) TF410 - Read Reviews on Duralast #TF410

https://www.partsgeek.com/catalog/2...ission/automatic_transmission_filter_kit.html
 

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If it's all brown, your thoughts would be on target, as would your method.

I'm a manual trans guy, but I'm sure someone else will chime in here.

Sent from my SAMSUNG-SM-G891A using Tapatalk
 

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Discussion Starter · #3 ·
Yes, I am ok with dropping the pan and cleaning it all up and what not, I just want to make sure I get the right filter before starting it. And my thoughts were by just draining at the plug and filling 2 times and then doing the 3rd time with dropping pan and replacing filter that that would get at least 80-90% of the old tranny fluid out. Just was hoping to get some input on the right filter though.
 

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Discussion Starter · #5 ·
I checked out my local autozone (live right next to one), and they definitely have the filter+gasket that I need. When looking at their transmission fluids, I wasn't too keen on going with the Valvoline Max Life. It doesn't specify mazda on the back list.

I did run across this on Ebay, and it says it is equivalent to the mazda atf-m5, which I believe is exactly what you would get from the dealer. Take a look at this fluid and let me know your thoughts?

12 Quarts ATF Type-M Automatic Transmission Oil Fluid Equivalent to Mazda M5
 
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