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Transmission fluid lifetime #5455984 06/17/20 11:04 AM
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Bill_W Offline OP
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Here is a quote from Mazda about their transmission fluid.

Then they say suggested service interval at specific time/mileage in the Operator’s Manual.

I see a lot of car manufacturers with sealed transmissions have the same statement. What does lifetime mean for a Mazda Skyactiv manual transmission?

A54BF5A3-64BC-4996-9CB8-FF9AF8ADA819.png
Last edited by Bill_W; 06/17/20 11:28 AM. Reason: Post a screenshot

Slick
Re: Transmission fluid lifetime [Re: Bill_W] #5455995 06/17/20 11:30 AM
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RyanY Offline
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IMO that first sentence says it all...it lasts until the trans dies. Whether the trans dies from fluid degradation or other causes is anyone's guess.


2007 Cadillac CTS 3.6L >131k miles; mix of PUP/Magnatec 5W-30 + ACDelco PF2129G

2012 Honda Odyssey EX-L >109k miles; QSUD 0W20 + STP S6607XL
Re: Transmission fluid lifetime [Re: Bill_W] #5456004 06/17/20 11:44 AM
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Kestas Offline
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What is SKYACTIV technology, and how does it affect the fluid life?

Re: Transmission fluid lifetime [Re: Bill_W] #5456008 06/17/20 11:48 AM
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hallstevenson Offline
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They are pretty clear and I think you're mis-reading it. If the vehicle has a Skyactiv transmission, the ATF is lifetime. The owner never needs to change the fluid (according to Mazda).

If it does not have a Skyactiv transmission, follow the schedule in the owner's manual.

If it's a Ford-sourced transmission, follow the owner's manual.

Re: Transmission fluid lifetime [Re: Bill_W] #5456016 06/17/20 12:01 PM
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slacktide_bitog Offline
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Even before so-called "lifetime" fill, most cars never got a transmission fluid change and arrived to the junkyard on their factory fill ATF crzy

Re: Transmission fluid lifetime [Re: Bill_W] #5456029 06/17/20 12:14 PM
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Bill_W Offline OP
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There are two Skyactiv transmissions. The Skyactiv Drive is a automatic and the Skyactiv MT.


Slick
Re: Transmission fluid lifetime [Re: Bill_W] #5456036 06/17/20 12:30 PM
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hallstevenson Offline
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Originally Posted by Bill_W
There are two Skyactiv transmissions. The Skyactiv Drive is a automatic and the Skyactiv MT.

The "MT" is their manual transmission. Auto and manual transmissions are worlds apart in design, complexity, and so on. Can't really even compare the two.

Re: Transmission fluid lifetime [Re: hallstevenson] #5456043 06/17/20 12:35 PM
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Bill_W Offline OP
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Originally Posted by hallstevenson
Originally Posted by Bill_W
There are two Skyactiv transmissions. The Skyactiv Drive is a automatic and the Skyactiv MT.

The "MT" is their manual transmission. Auto and manual transmissions are worlds apart in design, complexity, and so on. Can't really even compare the two.

Agree. But Mazda did not mention anything but Skyactiv.


Slick
Re: Transmission fluid lifetime [Re: Bill_W] #5456085 06/17/20 01:18 PM
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Kawiguy454 Offline
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Its your choice. Follow the manual and wish the "Lifetime" is >= your lifetime. Or change the fluid and roll the dice that the trans lasts 2 lifetimes.

The old F150 has had 3 changes and the trans is still smooth as butter @ 210K+

Last edited by Kawiguy454; 06/17/20 01:20 PM.
Re: Transmission fluid lifetime [Re: Bill_W] #5456090 06/17/20 01:35 PM
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DGXR Offline
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I have never seen a sealed manual transmission. Do they exist?

And as Kestas inquired... how does skyactiv technology affect the life of the transmission fluid, whether it's automatic or manual? To my knowledge, skyactiv is an engine technology. It sounds like they are saying that the transmissions paired to skyactiv vs non-skyactive engines are different transmissions, which is possible but makes little business sense... in my cluttered mind laugh


1995 Corvette coupe LT1 6-speed
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2003 Honda XR400R
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Re: Transmission fluid lifetime [Re: Bill_W] #5456106 06/17/20 02:04 PM
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I hate to answer a question with a question, but why are you asking an Internet forum about the meaning of their verbiage? They are the only ones that can provide the answer.


2012 Charger Pursuit aka "The Bacon Hauler"
- 5.7L + NAG1 (A5) + 3.07 (215mm)
Re: Transmission fluid lifetime [Re: Bill_W] #5456129 06/17/20 02:29 PM
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Yah-Tah-Hey Offline
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No such ATF exists. YOU, not the manufacturer will be on the hook for a new AT. YOU

Re: Transmission fluid lifetime [Re: The_Nuke] #5456165 06/17/20 03:04 PM
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Bill_W Offline OP
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A lot of aftermarket
Originally Posted by The_Nuke
I hate to answer a question with a question, but why are you asking an Internet forum about the meaning of their verbiage? They are the only ones that can provide the answer.


For the ND Miata a lot of aftermarket transmission fluids are recommended. Someone at Miata.net quoted this from Mazda site. The Operator’s Manual calls for service, either severe or normal period. The OEM specs calls for Original Mazda Long Life 75w-90 IS and then says if that fluid is not available then any GL-4 75w-90 will do but may cause hard shifting in cold weather.

Everything points to You can change the fluid at the mileage/time per schedule. Then today I see this from Mazda. So I looked around on the internet and see the “Lifetime Transmission fluid” verbiage on quite a lot of car manufacturer transmission. Wondered if this is a work around legal thing.

As far as sealed transmission, from what others have said if there is no dipstick it is that definition. But what does anyone know?

Last edited by Bill_W; 06/17/20 03:07 PM.

Slick
Re: Transmission fluid lifetime [Re: Bill_W] #5456176 06/17/20 03:20 PM
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macarose Offline
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It often depends on where you drive, how you drive, and so forth.

As a fail safe I generally recommend chaning transmission fluids every 30k on midsize and larger front wheel drive vehicles.

If it's a truck 50k will be perfectly fine in most cases.

If you're performing rideshare in a temperate climate, it's best to get it done once a year.


As an aside, vehicles that do not have sealed transmissions greatly out perform those with sealed units on average due to the servicing issues.

http://www.dashboard-light.com/

Re: Transmission fluid lifetime [Re: Bill_W] #5456178 06/17/20 03:22 PM
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demarpaint Offline
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When I see the words "lifetime fluid" I laugh, and then follow what I think is the appropriate interval to change the fluid based on how the vehicle is used. Or I consult experts on the topic, and arrive at an interval. Anyone I consider an expert laughs when they hear the term "lifetime fluid."


God Bless Our Troops

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