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Changing ATF due to age? #5401449 04/12/20 07:40 PM
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PantherFan88 Offline OP
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Hey guys. I inherited a 2014 Yaris w/4k on it from a family member one year ago. I'm now at 14k. All the fluids are original besides the oil. The ATF looks nice and red as it should, but I'm wondering if I should change it out since it's 7 years old, been in the car since 2013 date of mfg. Thinking just doing a pan drain and refill, since the filter is likely okay due to the low miles. Brake fluid is on the list as well. Plan on using genuine Toyota WS, since it's a small pan and any cost saving using a compatible fluid (MaxLife, etc) aren't worth it for 4 quarts.

Any insight is appreciated.


05 Crown Vic 4.6L - 62k - M1 5w-20 + MC FL820s
14 Yaris 1.5L - 14k - Mobil Super Syn 5w-30 + 90915-YZZF2
05 Tundra 4.7L - 305k - Mobil Super HM 5w-30 + MC FL-400

Re: Changing ATF due to age? [Re: PantherFan88] #5401451 04/12/20 07:44 PM
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Rand Offline
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It doesnt get contamination(like motor oil does) but since its factory fill and 7 years I'd change it.

Usually there is extra break in wear in there.


2019 Jeep Cherokee Trailhawk 2.0T
2020 Hyundai Elantra "Value Edition"
Re: Changing ATF due to age? [Re: PantherFan88] #5401453 04/12/20 07:45 PM
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ctechbob Offline
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Couple schools of thought.

Low miles, so why bother.

Low miles, maybe a ton of stop and go with the foot on the brakes in heavy traffic (higher heat load and less cooling)

Me, anything 'new to me' I like to start with a baseline, so everything gets changed as soon as practical. That way I know where I'm starting from with no guessing.


2008 Acura TL Type S-170k
2003 Honda Accord V6-222k
Oil-Havoline HM 5W30
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Trans-Idemitsu H+
Re: Changing ATF due to age? [Re: ctechbob] #5401455 04/12/20 07:46 PM
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PantherFan88 Offline OP
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Yeah. It was 100% short tripped all its life.


05 Crown Vic 4.6L - 62k - M1 5w-20 + MC FL820s
14 Yaris 1.5L - 14k - Mobil Super Syn 5w-30 + 90915-YZZF2
05 Tundra 4.7L - 305k - Mobil Super HM 5w-30 + MC FL-400

Re: Changing ATF due to age? [Re: PantherFan88] #5401464 04/12/20 08:02 PM
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blufeb95 Online Content
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I'd do a drain and fill with a pan drop and replace the filter.

Re: Changing ATF due to age? [Re: PantherFan88] #5401465 04/12/20 08:02 PM
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Leo99 Offline
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I wouldn't touch it until at least 30k miles. How much do you plan to drive it?


Without data you're just another person with an opinion. W. E. Deming


2004 Corolla 125,000 miles
2004 Rav4 399,852 miles (RIP)
2015 Camry 101,000 miles
2020 Rav4 6,000 miles
Re: Changing ATF due to age? [Re: PantherFan88] #5401479 04/12/20 08:29 PM
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PowerSurge Offline
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Won’t hurt a thing changing it. But since you’re going to be taking the pan off, might as well change the filter also.


1993 Porsche 964, 2001 Ford SVT F-150 Lightning, 2004 Chevrolet Corvette, 2018 Toyota Tundra and a few others
Re: Changing ATF due to age? [Re: PowerSurge] #5401484 04/12/20 08:34 PM
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PantherFan88 Offline OP
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Not taking the pan off. It has a drain bolt.


05 Crown Vic 4.6L - 62k - M1 5w-20 + MC FL820s
14 Yaris 1.5L - 14k - Mobil Super Syn 5w-30 + 90915-YZZF2
05 Tundra 4.7L - 305k - Mobil Super HM 5w-30 + MC FL-400

Re: Changing ATF due to age? [Re: PantherFan88] #5401491 04/12/20 08:44 PM
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2010Civic Offline
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I'd change it. Change the brake fluid too.


2010 Honda Civic LX
Valvoline SynPower 5w-20 - Napa Gold oil filter
59,992 miles
Re: Changing ATF due to age? [Re: PantherFan88] #5401523 04/12/20 09:29 PM
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stanlee Offline
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Waste of time and money changing 7 year old 14k mile transmission fluid unless you've submerged it in water off roading (in which case it should have been changed immediately) or did something weird with the vent tube.

Re: Changing ATF due to age? [Re: PantherFan88] #5401539 04/12/20 09:49 PM
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MRtv Offline
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I have a belief of any new to me vehicle gets all fluids drained and refilled. Anyone who says why waste it and doesn't own the vehicle gets to voice opinion but does not get to vote on what I will or will not do. You own it and it is yours. Do as you like. I have said what I do with new to me vehicles.


2014 Nissan Versa Note 1.6 liter engine. 1997 Ford F150 4x4 4.6 liter engine.
Re: Changing ATF due to age? [Re: PantherFan88] #5401542 04/12/20 09:54 PM
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kstanf150 Offline
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Change it
Since it’s just a plug removal and drain 3-4 quarts it’s a good idea
You’ll find around here thats there’s lots of guys that would rather save $30 bucks on fluid and risk a tranny down the road to save $30 bucks of fluid.
Change it and buy peace of mind !!👍

Re: Changing ATF due to age? [Re: PantherFan88] #5401596 04/13/20 12:04 AM
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dubber09 Offline
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You will find metal particles buildup on magnetic drain plug, what hasn't been caught but ATF filter - that's only part of all the metal particles floating in ATF (some are non magnetic) and overall mass and particles size are much greater than what is floating in engine oil. Drain and fill, remove that abrasive junk from ATF.


Kia Sportage 2014 GDI 2.4L
Kia Forte 2014 MPI 1.8L
Re: Changing ATF due to age? [Re: stanlee] #5401626 04/13/20 02:33 AM
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Linctex Offline
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Originally Posted by stanlee
Waste of time and money changing 7 year old 14k mile transmission fluid unless you've submerged it in water off roading (in which case it should have been changed immediately) or did something weird with the vent tube.


^^^ Pretty much my thoughts exactly ^^^


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Changing ATF due to age? [Re: PantherFan88] #5401655 04/13/20 04:44 AM
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Lubener Offline
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In 2014 changed out twenty one year old Dex 2 which only had 40k miles on it.I might be pushing up daisies before the next change. The fluid/ filter looked like new. I never change ATF based on time, only mileage accrued.. Brake fluid gets flushed out with every brake job whatever mileage or time has accumulated.

Last edited by Lubener; 04/13/20 04:47 AM.

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