50K Fluid Change - so easy! - Mazda 6 Forums : Mazda 6 Forum / Mazda Atenza Forum
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post #1 of 17 (permalink) Old 11-06-2016, 05:07 PM Thread Starter
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Cool 50K Fluid Change - so easy!

During my latest oil change today I also did the ATX fluid. I bought 4 quarts of Mazda FZ on Amazon for around $12.50/qt earlier in the year. Had I known it would be this easy, I would have done this at 30K instead. The airbox removal wasn't even difficult, 2 pop clips, a sensor, and yank it out. I learned we have a snow-screen on the snorkel that prevents debris from getting in the air box - cool!

The most annoying and time consuming part was simply removing all the pop-clips and bolts (10 mm) from the underside cover. Otherwise, it was as simple as drain (8mm allen socket needed) and fill with 3.4qts of Mazda FZ. The fluid that came out was a dark tea brown, and the fluid going back in was alien cyan blue as it should be. Lifetime fluid my ass!

I plan on doing this every other year (30K mile interval) to keep things humming along smoothly, and so far it seems to have made shifts cleaner and switching from D to R is now back to butter smooth. I encourage everyone try this if they're comfortable with a regular oil change.

For reference, attached is the photo of the location of the ATX dipstick with the airbox removed.
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Last edited by eyedocorlando; 11-06-2016 at 11:47 PM.
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post #2 of 17 (permalink) Old 11-06-2016, 06:22 PM
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That's the dipstick bolt. The drain is UNDER the tranny.

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post #3 of 17 (permalink) Old 11-06-2016, 08:15 PM
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How did you drain from the dipstick bolt?


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post #4 of 17 (permalink) Old 11-06-2016, 08:31 PM
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I thought tranny fluid flush was supposed to be at 100k... Did I remember that wrong?

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post #5 of 17 (permalink) Old 11-06-2016, 08:56 PM
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Quote:
Originally Posted by jenjen777 View Post
I thought tranny fluid flush was supposed to be at 100k... Did I remember that wrong?

There is no interval, it's lifetime so anyone that changes it does so at their own interval. Mazda says it never needs to be changed.


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post #6 of 17 (permalink) Old 11-06-2016, 11:47 PM Thread Starter
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The above is correct, there is no specified mazda change interval. And yes, the photo is of the dipstick, the drain bolt is 8mm allen underneath the car. I edited it.
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post #7 of 17 (permalink) Old 11-18-2016, 03:33 PM
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Quote:
Originally Posted by eyedocorlando View Post
The above is correct, there is no specified mazda change interval. And yes, the photo is of the dipstick, the drain bolt is 8mm allen underneath the car. I edited it.
I think this will not drain all the oil -correct me if i'm wrong- , and is it similar to this procedure ? > AUTOMATIC TRANSAXLE FLUID (ATF) REPLACEMENT [FW6A-EL]
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post #8 of 17 (permalink) Old 11-18-2016, 03:37 PM Thread Starter
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w1000i, Yes this is a partial fluid change. I performed that exact procedure from the serviced manual. I only got 3.4 quarts out but the transmission holds more in the torque converter and inside the valve body. Nobody recommends a flush anymore, but fairly regular partial drain/fill procedures done will keep the fluid contamination low and the fluid life and additives up.

In all seriousness though the fluid I drained out looked like dark tea, smelled not so fresh, and afterwards the transmission is far smoother on downshifts and when cold shifting in the morning than before. I will continue to make this part of my 30K ritual, it's very easy and worth it.

Considering this, it makes me wonder if I should do other things early. 60K coolant? 60K Plugs?


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Last edited by eyedocorlando; 11-18-2016 at 03:41 PM.
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post #9 of 17 (permalink) Old 06-09-2017, 02:13 PM
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Has anyone tried the Ravenol ATF FZ for Mazda SKYACTIV? I like their engine oils, but don't want to be the first to try the ATF.

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post #10 of 17 (permalink) Old 06-09-2017, 02:45 PM
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Quote:
Originally Posted by eyedocorlando View Post
w1000i, Yes this is a partial fluid change. I performed that exact procedure from the serviced manual. I only got 3.4 quarts out but the transmission holds more in the torque converter and inside the valve body. Nobody recommends a flush anymore, but fairly regular partial drain/fill procedures done will keep the fluid contamination low and the fluid life and additives up.

In all seriousness though the fluid I drained out looked like dark tea, smelled not so fresh, and afterwards the transmission is far smoother on downshifts and when cold shifting in the morning than before. I will continue to make this part of my 30K ritual, it's very easy and worth it.

Considering this, it makes me wonder if I should do other things early. 60K coolant? 60K Plugs?
A couple of things to consider:

Transmission fluid only has two enemies, heat and clutch wear tailings. If you can keep the wear and heat down the fluid will last for the life of the transmission. Of the two, heat is the biggest enemy because the tailings typically settle to the bottom of the pan! The "old school" way to check the transmission fluid is to pull the dipstick and check the color (Typically crimson) on your fingers and "smell" a tell tail burnt smell. If your fluid is burnt it will lose its ability to cool and toast your transmission pretty quickly!

The reason the transmission "Flush" has gone from fashion is it seemed to loosen up the tailings that sit in the bottom of the pan and circulate them into the transmission blocking the fluid from circulating causing failure. More than 10 years ago Honda adopted the 3x3 fluid change which basically was designed to dump three quarts, fill, run the trans through the gears, dump, fill repeat two more times. They estimated that 90% of the fluid was changed in this process. If you have your car on four jack stands with the traction control off, you can do the same thing in your driveway. Just remember to put your foot on the break all the way before moving from Park, Reverse and Drive as the wheels have no drag on them and will keep turning!

I did the 3x3 in my driveway on my wife's Accord six years ago @ around 30,000 (It has 52,000 on the clock now) using Red Line 30304 and a quart of 30504 Racing Automatic Transmission Fluid (ATF). I check it and never a problem since. Hope that helps!

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Last edited by BrianU; 06-09-2017 at 02:53 PM.
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