Transmission fluid change without filter replacement

Kedis82ZE8

'15 CX-5 GT AWD, '12 GX 460, '07 G35x
Contributor
:
'15 CX-5 GT AWD
BTW which OBDII BT reader or app did you eventually use on your CX-5 as you've at least mentioned a couple, like OBDLink, FORScan / Lite, ELM327, or UltraGauge MX? And which one do you recomnmend?

FORScan seemed more than capable and I think a few have already used it for their fluid swap.

I used OBDLink... this is one of their adapters and includes the software

https://www.amazon.com/dp/B07JFRFJG6/?tag=m20b7-20

If you go with OBD Fusion you can buy the model year specific add-on for an extra $10. OBD Link basically includes all vehicles though so depending on how many vehicles you plan to use will determine purchase path.

OBD Fusion can be used with any adapter... Link only works with the MX.
 
:
2014 Mazda3 S GT auto, 2008 MX5 6-speed
I use Scangauge in each of my two vehicles, primarily because I like having the convenience of glancing down and reading any 4 of 16 readouts.
 

Kedis82ZE8

'15 CX-5 GT AWD, '12 GX 460, '07 G35x
Contributor
:
'15 CX-5 GT AWD
Another drain and fill. Took me may be 40 minutes from pulling everything out to cleanup.

Interestingly drained 3 quarts 10 fl oz (~3.3 quarts). I have very accurate measure cups. So I just refilled with what came out. Perhaps more was captured in the TC that didn't drain to pan?
 

ColoradoDriver

Gen-1 Kodo Design
Contributor
:
Denver, CO
:
2014 CX-5 Touring
Another drain and fill. Took me may be 40 minutes from pulling everything out to cleanup.

Interestingly drained 3 quarts 10 fl oz (~3.3 quarts). I have very accurate measure cups. So I just refilled with what came out. Perhaps more was captured in the TC that didn't drain to pan?

Very interesting. As I was experimenting with different fill levels to get to the correct level, I always drained exactly what I had filled with.

All with the rhino ramps.
 

Kedis82ZE8

'15 CX-5 GT AWD, '12 GX 460, '07 G35x
Contributor
:
'15 CX-5 GT AWD
Next drain and fill I plan to do another level test at temp... I will update thread with results.
 

Kedis82ZE8

'15 CX-5 GT AWD, '12 GX 460, '07 G35x
Contributor
:
'15 CX-5 GT AWD
This third one was 3 quarts 17 ounces (3.53 quarts)

2nd again was 3.31 quarts

and first was 3.72 quarts

I didn't do another level test in near future. I will do that before I put the under splash cover back on. I still have ~1.5 quarts left.
 
Good morning,

This is my first post on the forum.

A little perspective on my car.

We own 2017 CX-5 Touring AWD, with 40,xxx miles. So it has been driven more than average, with mixture of long and short distances. My wife commutes to work daily with 1 mile drive 😊.The car is garaged, and we live in small town. So heavy stop and go traffic does not exist. The car is in excellent shape both visually and mechanically. My wife likes it very much!
Except for 2 dealer free oil changes, I have done all the service myself. I stick to 5000 miles service intervals.

I would like to share my observations and experience while performing the transmission fluid change along my 40,000 mile service. I know that the service manual does not specify intervals for this job, but I have done it anyway since there is a fill and drain plug, and Mazda sells filter and appropriate gear oil.

1. The old transmission filter looked really clean.
2. The transmission pan magnet had ZERO, I repeat ZERO metal shavings. The bottom pan was really clean.
3. I have installed a new filter, put the new RTV gasket, bolted the pan (6 ft lb), and let the pan sit 24 hours to cure before adding the oil.
4. I have drained about 4.5 quarts of the Mazda OE oil, so I have refilled the transmission with the same amount. The old oil looked OK.

IMO, this is not a difficult job at all. Breaking the old seal took some time (putty knife works really well), and the Goo Remover was really helpful in removing some old gasket on the pan. While you are there you can change the engine oil and do the transfer case fluid change as well.

Now the question is, whether this is worth doing of not? I am glad I did it, and it only cost me about $120 for the fluid, filter, and RTV gasket maker. For the next service, I will wait until 90 or 100K miles. Based on condition of my old transmission filter, and lack of metal shaving, maybe drain and fill is a way to go, who knows.

Cheers,
Jarek
 

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ColoradoDriver

Gen-1 Kodo Design
Contributor
:
Denver, CO
:
2014 CX-5 Touring
4. I have drained about 4.5 quarts of the Mazda OE oil, so I have refilled the transmission with the same amount.

Did you measure the level on the dipstick? Most have found levels to be low from factory such that a simple "same amount" replacement doesn't really work on the first change.
 
I don't plan on ever doing a fluid change. The more I learn about modern transmissions the more I realize why they are in fact lifetime fills. We are lucky to put 10k/year on. I highly doubt I'll have this vehicle 15 years in the worst area of the rust belt in the country. Seems like a waste of time frankly. I used to think oil needed changed every 3k or 3 months too...
 
Yes, I have measured the level with the dipstick before and after addition. Plus I have measured what I have collected which was 4.5 quarts.
 
:
2018 CX-5 Sport
Good morning,

This is my first post on the forum.

A little perspective on my car.

We own 2017 CX-5 Touring AWD, with 40,xxx miles. So it has been driven more than average, with mixture of long and short distances. My wife commutes to work daily with 1 mile drive ��.The car is garaged, and we live in small town. So heavy stop and go traffic does not exist. The car is in excellent shape both visually and mechanically. My wife likes it very much!
Except for 2 dealer free oil changes, I have done all the service myself. I stick to 5000 miles service intervals.

I would like to share my observations and experience while performing the transmission fluid change along my 40,000 mile service. I know that the service manual does not specify intervals for this job, but I have done it anyway since there is a fill and drain plug, and Mazda sells filter and appropriate gear oil.

1. The old transmission filter looked really clean.
2. The transmission pan magnet had ZERO, I repeat ZERO metal shavings. The bottom pan was really clean.
3. I have installed a new filter, put the new RTV gasket, bolted the pan (6 ft lb), and let the pan sit 24 hours to cure before adding the oil.
4. I have drained about 4.5 quarts of the Mazda OE oil, so I have refilled the transmission with the same amount. The old oil looked OK.

IMO, this is not a difficult job at all. Breaking the old seal took some time (putty knife works really well), and the Goo Remover was really helpful in removing some old gasket on the pan. While you are there you can change the engine oil and do the transfer case fluid change as well.

Now the question is, whether this is worth doing of not? I am glad I did it, and it only cost me about $120 for the fluid, filter, and RTV gasket maker. For the next service, I will wait until 90 or 100K miles. Based on condition of my old transmission filter, and lack of metal shaving, maybe drain and fill is a way to go, who knows.

Cheers,
Jarek

Thanks. Hearing about the lack of deposits in the pan at 40K is very useful information.
 
:
2014 CX-5 Touring
I don't plan on ever doing a fluid change. The more I learn about modern transmissions the more I realize why they are in fact lifetime fills. We are lucky to put 10k/year on. I highly doubt I'll have this vehicle 15 years in the worst area of the rust belt in the country. Seems like a waste of time frankly. I used to think oil needed changed every 3k or 3 months too...

I guess if you only buy new cars that would work. Heck you could buy/lease a new car every single year and never even do an oil change! But what about the next guy to have the car? Meanwhile for the rest of us who keep cars a long time, fluid changes are needed. Lifetime fluid is a ridiculous concept. Any type of lubricating fluid eventually gets dirty and wears out.
 
:
13' CX-5 and 16' Mazda6 both Touring w/Tech/Bose
I bet by 60k, oil analysis would indicate all lubricating additives would be spent. By 100k if not changed....the metal shavings themselves would be the lubricating agents.

I just do drain and fills because I may want to keep the car through 150k miles in severe (desert heat) conditions AND be able to give or sell car to friends/family with added peace of mind.
 
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:
2014 Mazda3 S GT auto, 2008 MX5 6-speed
*.so you guys change out your wheel bearings every 60,000 miles? Does anyone know what the extent of transmission life testing Mazda performed to justify their stance on this issue? I have worked with Japanese engineers before and found them to be extremely thorough when it comes to reliability testing.
 
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2016.5 CX-5 GT AWD titanium/black 2016 Miata Club ST MT white
*.so you guys change out your wheel bearings every 60,000 miles? Does anyone know what the extent of transmission life testing Mazda performed to justify their stance on this issue? I have worked with Japanese engineers before and found them to be extremely thorough when it comes to reliability testing.

Apples to apples, oranges to oranges. Not a fair comparison.
 
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