|
|
08-20-2019, 05:00 PM
|
#1
|
Moderator Emeritus
Join Date: Jun 2011
Location: HillBilly country, Smokey Mtns
Posts: 4,171
|
Late-model automatic transmissions
In the world of automatic transmissions, things have changed in the last 20 years. For my 1999.5 SuperDuty tow vehicle, the specs called for MERCON ATF, changed every 20,000 miles. If I did that, and never allowed the ATF to overheat, I would expect over 100,000 miles before my first tranny overhaul.
My 2019 F-150 tranny requires the newer long-life ATF, an the first ATF change is not until 150,000 miles, regardless of how hard to you work the tranny. Click on the following link for a recent report by Blackstone labs about this.
https://gallery.mailchimp.com/f64139...newsletter.pdf
__________________
Grumpy ole man with over 60 years towing experience. Now my heaviest trailer is a 7'x16' 5,000-pound flatbed utility trailer, my tow vehicle is a 2019 F-150 Lariat 3.5L EcoBoost SuperCab with Max Tow (1,904 pounds payload capacity).
|
|
|
|
Join the #1 RV Forum Today - It's Totally Free!
iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!
You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!
|
08-20-2019, 05:10 PM
|
#2
|
Senior Member
Join Date: Sep 2012
Location: Palm Coast Florida
Posts: 12,995
|
Back in the 1980's I would have the hood up on my car at least once a week doing something. Now I have the hood up 2 times a year if it needs it if not.
But tranny fluid change every 150,000 miles is hard to believe, especially if you work it easy or work it hard.
Must be a combination of 3 things:
1. Improvements in metallurgy
2. Improvements in precise machining of the gears and seals.
3. Improvements in lubrication
What do you guys think ?
|
|
|
08-20-2019, 08:25 PM
|
#3
|
Senior Member
Join Date: Sep 2016
Location: SLC, UT
Posts: 1,172
|
My F-350 doesn't even have a drain in the pan, and I have a 100k mile warranty. I won't be changing it.
Same with the oil - ~10k changes or when the computer says so, not a mile before. So far it's been 10k each time. We tow heavy about 1/3 of the miles.
These aren't the trucks from the 60's anymore.... engineers have done the math. And I come from a family of engineers so I trust them.
__________________
2017 F-350 6.7 Diesel, CCSB SRW - 2005 F350 6.0
2018 Alpine 3660FL - 2005 Alfa SYF30RLIK
--Full time 2016 to 2019-- Seasonal now
|
|
|
08-20-2019, 09:31 PM
|
#4
|
Senior Member
Join Date: Aug 2013
Posts: 1,465
|
Well the Aisin in the Rams have drain and refill at 30,000 miles, and a drain fill and filter change at 65,000 miles.
In our 79 and 89 F250’s with the C6, the cooler return line drained directly into the sump. So you could disconnect the return and drain into a large pan. Start with fresh filter pan full of clean fluid, start engine, wheels blocked, parking brake set helper with foot of brake pedal start engine and start shifting through the gears, while you start adding fluid at a pace that keeps up with the drain. Keep watching what is going in the tub for color change from dark red to bright red. Button up and top off fluid if needed.
__________________
Russ & Paula, Portland, OR. The Beagle Belle.
2016 Ram Laramie 3500 DRW Aisin 4X4 14,000# GVWR.
2005 Keystone Copper Canyon 293FWSLS Rear Kitchen 12,360 GVWR
|
|
|
08-21-2019, 07:07 AM
|
#5
|
Senior Member
Join Date: Oct 2015
Location: Texas Hill Country
Posts: 1,793
|
I tow heavy for my 2016 F150.
I dropped my tranny pan for the 1st time at 90K miles. I installed a new filter and topped off the fluid (almost half of the total). I also installed a new pan with a drain plug. I now drain and fill the tranny every 3rd engine oil change (which I do every 5K miles).
__________________
2017 22K Bounder 415/6spd/5:38s
2018 F150 Lariat 502A 4X4 Toad & Tow Vehicle
2023 Rockwood GeoPro 20BHS
|
|
|
08-21-2019, 07:57 AM
|
#6
|
Senior Member
Join Date: Mar 2019
Posts: 2,988
|
Quote:
Originally Posted by SmokeyWren
In the world of automatic transmissions, things have changed in the last 20 years. For my 1999.5 SuperDuty tow vehicle, the specs called for MERCON ATF, changed every 20,000 miles. If I did that, and never allowed the ATF to overheat, I would expect over 100,000 miles before my first tranny overhaul.
My 2019 F-150 tranny requires the newer long-life ATF, an the first ATF change is not until 150,000 miles, regardless of how hard to you work the tranny. Click on the following link for a recent report by Blackstone labs about this.
https://gallery.mailchimp.com/f64139...newsletter.pdf
|
Not sure what your question is exactly. Yes, trannies have changed a LOT in 20 years! from 4 and 5 speeds to 6, 8 and 10+ speeds. Fluids have changed specs and types multiple times over the years. It is growing frustration for shopowners like myself that try and stock fluids. I must have 8 to 10 different ATF fluids in stock and now only carry the 4 or 5 most popular, order the rest as needed. It isn't uncommon to have 3000$ of ATF sitting in inventory to cover barely 50-60% of the market, and that's only enough for 1 or 2 vehicles per fluid.
At any rate, if yours is the 8 or 10 speed i'd hold off a bit on any trans fluid replacement as long as yours works fine and doesn't shudder/jerk. Lots of issues on these on the GM side and I know Ford has the same trans although gearing may differ as may shift software. Have been 2 or 3 updates to ATF on these at GM.
__________________
2011 GMC Sierra 3500HD gas 6.0 dually
1994 K1500 Suburban shop mule and plow truck
2006 Lakota 29RKT 5th wheel
|
|
|
08-21-2019, 11:08 AM
|
#7
|
Senior Member
Outdoors RV Owners Club
Join Date: Apr 2018
Location: Seattle
Posts: 469
|
I don't care what the schedule says. >50% of my mileage is towing, so I plan to have mine changed every 36mo.
__________________
2013 ORV Creek Side 18CK
2018 Expedition Max FX4
|
|
|
08-21-2019, 12:08 PM
|
#8
|
Senior Member
Join Date: Oct 2015
Location: Texas Hill Country
Posts: 1,793
|
I can't go back and edit my previous comment in post #5 so...
I originally did not intend to do it myself but when I inquired at my local dealer I was told, "We don't drop the pan to change the filter, we only do a flush". When I again explained that I wanted my filter and pan changed, I got the cold shoulder. They didn't want to open it up. Oh well, I feel better about it now since I know I did it right and now have a pan with a drain plug.
__________________
2017 22K Bounder 415/6spd/5:38s
2018 F150 Lariat 502A 4X4 Toad & Tow Vehicle
2023 Rockwood GeoPro 20BHS
|
|
|
08-21-2019, 03:02 PM
|
#9
|
Moderator Emeritus
Join Date: Jun 2011
Location: HillBilly country, Smokey Mtns
Posts: 4,171
|
Quote:
Originally Posted by kdauto
Not sure what your question is exactly.
|
I don't have a question. I was simply passing on the info in the Blackstone Labs report.
|
|
|
08-21-2019, 06:50 PM
|
#10
|
Senior Member
Join Date: Nov 2009
Posts: 324
|
I had a long time transmission guy tell me, unless its burnt, never change the fluid. Most use synthetic now days. As most shops just flush it, but don't change the filter, unless it is burnt, its not worth changing. Just like the old way of changing the engine oil ever 3000 miles, you are probably hurting more than helping. Everytime you change the engine oil, you are starting it with no oil pressure. I had a Tundra that is still out there, running around at 300,000 miles on a tranny that never had the transmission fluid changed. Truck had a constant 1500 lbs on it since it was new. As I said before, if it smells or looks burnt, change it, if not, your wasting your money.
|
|
|
08-22-2019, 02:19 AM
|
#11
|
Senior Member
Join Date: Aug 2013
Posts: 1,465
|
Quote:
Originally Posted by 77Travco
I tow heavy for my 2016 F150.
I dropped my tranny pan for the 1st time at 90K miles. I installed a new filter and topped off the fluid (almost half of the total). I also installed a new pan with a drain plug. I now drain and fill the tranny every 3rd engine oil change (which I do every 5K miles).
|
That fluid looks a bit dark, did you send a sample to be analyzed?
__________________
Russ & Paula, Portland, OR. The Beagle Belle.
2016 Ram Laramie 3500 DRW Aisin 4X4 14,000# GVWR.
2005 Keystone Copper Canyon 293FWSLS Rear Kitchen 12,360 GVWR
|
|
|
08-22-2019, 06:16 AM
|
#12
|
Senior Member
Join Date: Mar 2019
Posts: 2,988
|
Quote:
Originally Posted by hillbilly3
I had a long time transmission guy tell me, unless its burnt, never change the fluid. Most use synthetic now days. As most shops just flush it, but don't change the filter, unless it is burnt, its not worth changing. Just like the old way of changing the engine oil ever 3000 miles, you are probably hurting more than helping. Everytime you change the engine oil, you are starting it with no oil pressure. I had a Tundra that is still out there, running around at 300,000 miles on a tranny that never had the transmission fluid changed. Truck had a constant 1500 lbs on it since it was new. As I said before, if it smells or looks burnt, change it, if not, your wasting your money.
|
That is just plain horrible advice. After 34 years as a professional tech I have heard this "argument" a few times. It's mostly from old crusty dudes set in their ways and uninterested in actual theory of operation.
One cannot go by fluid color or smell anymore for deciding fluid replacement time. WS fluid as used in many Toyotas gets brownish rather soon and smells odd. Some Ford ATF fluids turn brown and can even smell "burnt" in as little as 20 000km, doesn't mean it is toast yet.
Using logic a good tech/shopowner can schedule fluid and filter replacements according to usage. I did the first fluid and filter drop on my then new to me truck at 100 000km. After a few very tough trips with lots of shifting action I replaced fluid only at 140 000km or so and am planning fluid only again at 173 000 km since it has worked hard and loaded. I will do the pan drop with fluid at 200 000-220 000 km.
If fluid is really burnt it is too late. Old fluid cakes on varnish on shift valves and such, really not ideal. Do what you want with yours but don't recommend this for others.
__________________
2011 GMC Sierra 3500HD gas 6.0 dually
1994 K1500 Suburban shop mule and plow truck
2006 Lakota 29RKT 5th wheel
|
|
|
08-22-2019, 06:27 AM
|
#13
|
Registered User
Ford Super Duty Owner
Join Date: Nov 2014
Location: NW Ohio
Posts: 7,114
|
I own two vehicles that the manufacture says the fluid is lifetime and never needs changed, (2013 Sonata, 2017 Camry). My thoughts are, Yah, thats probably good to get the vehicle past 100 - 150k, but I run my vehicles out past 300k. So I'll change at 50k intervals.
I changed the filter and flushed with fresh fluid at 50k miles. The old fluid looked like 77Travco's photos, very dark, but no burn smell.
I also change filter and flush on 1999 Ford F53 at 50k mile interval. I do whats called a cooler return line flush, my 4R100 transmission takes about 5 gallons to do this.
F53 – Transmission filter change and flush – 1999 Southwind 35S
Valvoline ATF Synthetic is compatible with all my vehicles, so its what I've used for years.
|
|
|
08-22-2019, 06:47 AM
|
#14
|
Senior Member
Join Date: Mar 2019
Posts: 2,988
|
Quote:
Originally Posted by Waiter21
I own two vehicles that the manufacture says the fluid is lifetime and never needs changed, (2013 Sonata, 2017 Camry). My thoughts are, Yah, thats probably good to get the vehicle past 100 - 150k, but I run my vehicles out past 300k. So I'll change at 50k intervals.
I changed the filter and flushed with fresh fluid at 50k miles. The old fluid looked like 77Travco's photos, very dark, but no burn smell.
I also change filter and flush on 1999 Ford F53 at 50k mile interval. I do whats called a cooler return line flush, my 4R100 transmission takes about 5 gallons to do this.
F53 – Transmission filter change and flush – 1999 Southwind 35S
Valvoline ATF Synthetic is compatible with all my vehicles, so its what I've used for years.
|
I would be careful with that Valvoline fluid. It will generally be ok for many late 90s, early 2000s vehicles but it does not meet all specs on newer stuff. Valvoline is one of the weasels that gets away with specifying "is suitable for use in" or "meets xxx protection specs" while ignoring a bunch of other important fluid characteristics. They make people feel it is fine in almost anything, which it just cannot be.
__________________
2011 GMC Sierra 3500HD gas 6.0 dually
1994 K1500 Suburban shop mule and plow truck
2006 Lakota 29RKT 5th wheel
|
|
|
|
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|