what should the price for a tranny flush be? i need the inner filter as well as the twist on filter changed. what would be a reasonable price to pay?

If you are talking about the back flush machines; I was told it is bad for newer tranys due to the internal electronics. The small external filters are about $10. Don't know about the other.

Best to drain, fill run a little then drrain again and refill. Will be mostly flushed but a little more costly on the oil side but you're not chancing with messing up the electronics and valves.

most of the newer trans flush machines are now just fluid exchangers and do not really flush like the old ones do. This makes them ok to get done. They just get hooked in series with one of the trans cooler lines. As the fluid goes into the machine, the mchine then puts out the same amount in new fluid.

most of the newer trans flush machines are now just fluid exchangers and do not really flush like the old ones do. This makes them ok to get done. They just get hooked in series with one of the trans cooler lines. As the fluid goes into the machine, the mchine then puts out the same amount in new fluid.

:exactly: Cost is approx $200 at the dealer...

what should the price for a tranny flush be? i need the inner filter as well as the twist on filter changed. what would be a reasonable price to pay?


I had mine done at the dealer before going on vacation this summer. Full flush with kit. Went to pay and the cashier said $375.00Cdn.(mostly parts) Holy sticker shock.The ally is one thirsty beast. The seal kit was $150.00 itself plus oil. Paid the bill and went to get truck and found tranny fluid pouring everywhere.:eek: It was just spillage but I was not pleased. :mad:

First time at this dealer.........and last.

Dealer in Vernon BC told me $200 CAN, I need to get mine done soon. Wonder if the Dealers here in Northern BC will be the same price? Has anyone brought in thier own parts? I'd rather give them a $10 Allison Filter from an allison dealer then pay their $40.

Glad I own my own machine.. :) 30$ or so for me and about 35 minutes.. But yea, the flusher is nothing more then a measuring tool that gauges what comes out and adds that amount with new fluid.. Pretty simple.. I think we charge 79.95 for the flush and then whatever the filters run, usually 30$ or so.... A big trans with a lot of fluid like the allison maybe 100 for the flat charge, lots of fluid used when doing all this.. Realistically you dont need a machine, you could drain and refill a few times, drive it around the block each time and get the same results, your just trying to dilute the old fluid and get it out of there.

Just curious. Why are you guys needing a flush? High mileage tranny run hot at one point, bad oil?

:iamwithst You need a tranny flush every 25,000 miles because ATF Fluid wears out after about that many miles in the Allison, normally 30,000 in other (gasoline, non Allison) vehicles. The fluid is heated and cooled so much that it looses its lubricity and gets worn out. The fluid could boil if it is too old. Anyway lower temps will prolong life of your Ally. Will also notice rough shifts, etc. with bad fluid. Surely you change your engine oil or have it changed because its routine maintenance, same thing with ATF flush.

:iamwithst You need a tranny flush every 25,000 miles because ATF Fluid wears out after about that many miles in the Allison, normally 30,000 in other (gasoline, non Allison) vehicles. The fluid is heated and cooled so much that it looses its lubricity and gets worn out. The fluid could boil if it is too old. Anyway lower temps will prolong life of your Ally. Will also notice rough shifts, etc. with bad fluid. Surely you change your engine oil or have it changed because its routine maintenance, same thing with ATF flush.

HOLY COW!! You could work at a jiffy lube place with that whole line of info. Prolly sell a million air filters and wiper blades to go along with your tranny flush ):h ):h
Really, If you are going to do a fluid change. Just do some reading and use the recommended "ally " synthetic trans fluid and u can go to 100,000 mile intervals. I am sure you would be $ ahead to do that rather than change the fluid every 30,000 miles

HOLY COW!! You could work at a jiffy lube place with that whole line of info. Prolly sell a million air filters and wiper blades to go along with your tranny flush ):h ):h
Really, If you are going to do a fluid change. Just do some reading and use the recommended "ally " synthetic trans fluid and u can go to 100,000 mile intervals. I am sure you would be $ ahead to do that rather than change the fluid every 30,000 miles

Exactly what I was thinking :o:

can most trans shops completely change the fluid, or do they just drain and re-fill?

Simply do a little reading on this subject ... There are a few threads that discuss various methods to swap out your tranny fluid. I am getting ready to drain the pan and change the filter myself . I will use transdyn in my tranny. Then I will run it until next oil change and do it again. After the 2nd time there should be enough in the system to run the 100,000 mile service intervals.
But that is a "readers digest " version.. there is a much more comprensive thread regarding this....
PS make sure u use allison spin on filters....

This is a synopsis of information I have collected on the Allison Transmission and maintenance recommendations. I have followed this advice on my 2002 Silverado with great success. Thanks to all the forum contributers over the years!

Fluid and filters are available at the local Allison dealer/distributer at a substantial savings verses GM. The Allison filter pickup in the pan is serviced at rebuild only. Replace the external spin-on filter at 5K miles and at 20K to 25K miles replace both the spin-on filter and the first fluid change. This is a good time to switch to the deep pan. The pan gasket is reusable and should not need replacing unless damaged. An Allison Factory Representative outlined the following procedure when changing from Dexron III to Transynd: Drain the pan and add new fluid to get a 70% mix of Transynd. The transmission fluid will change color, but it is fine. Do the next Transynd change at 25K miles and then go to100K miles between changes. See new 2002 fluid change interval announcement below. They also stressed following points:
1. Never machine power flush an Allison transmission. It has been discovered that this process blows out the "O" rings and rubber seals.
2. Change the spin on filter first at 5K miles, as the majority of filings and clutch material shows up in the first 5K miles. Changing the spin-on filter you'll lose only about as much fluid as the filter holds - less than half a quart. After that, change the filter per the Allison’s recomendations.
3. When asked about disconnecting the cooler line and dumping fluid until the color changes to get more Dexron III out. They said even that method will never get it all. The second change should flush most of old fluid out.
4. After the second change you can go 150K mile intervals. See below.

http://www.allisontransmission.com/news/Feb2002/117.jsp (http://www.allisontransmission.com/news/Feb2002/117.jsp)
Allison Transmission Announces New Extended Drain Intervals for TranSynd™ Company Begins Using Fluid for Factory Fill February 22, 2002
Allison Transmission has announced that it has extended drain intervals for TranSynd automatic transmission fluid (ATF). The company, which made the move in January, has also begun using the fluid as "factory fill" for its AT, MT, HT, MD HD, B and MH Series transmissions.
The move is prompted by the success of TranSynd™ in more than three years of extensive field testing of the product, say company officials. "In rigorous field studies TranSynd™ has shown remarkable performance in a broad range of applications," says Mitch Murray, manager of Tactical Marketing at Allison. "This proven performance, combined with Allison’s use of TranSynd™ as "factory fill" for our World Transmission products, is enabling us to confidently extend drain intervals to these dramatic levels."

Allison has set the new drain intervals for TranSynd™ in most World Transmission models at 75,000 miles for Severe Duty applications and 150,000 miles for General Duty application. Previously the fluid was rated for 50,000 Severe Duty and 100,000 for General Duty*.
As part of the drain interval extension, Allison has also begun using high-performance "Gold Series" oil filters on all its World Transmission products. The Gold Series filters offer increased filtration capacity that also plays a key role in extending TranSynd™ drain intervals by up to 50 percent.
Introduced to the marketplace in June 1999, TranSynd™ dramatically extends oil drain intervals for Allison automatic transmissions. TranSynd™ is a co-branded ATF exclusively formulated by Castrol Heavy Duty Lubricants, Inc. for use in heavy-duty Allison Automatic Transmissions.
Today’’s transmissions operate at higher temperatures and in far more demanding conditions than in the past," says Murray. "TranSynd™ offers significantly longer oil drain intervals compared with other automatic transmission fluids. In addition, the product reduces fleet costs related to maintenance, labor, filter replacement and oil disposal."

Engineered for Allison Transmission by Castrol, TranSynd™ dramatically extends drain intervals, lowers maintenance costs and increases overall fleet productivity. The product is especially well suited for use in severe-duty applications. While TranSynd™ brings value to all fleets, it is especially beneficial for use in large fleets having many Severe-Duty vehicles that need a long lasting, proven ATF solution.
Because TranSynd™ functions within wider operating temperature ranges, it is ideal for use year-round in all climates. TranSynd™ also is much more resistant to thermal breakdown than other fluids. This ensures superior protection of transmission components and extended fluid and transmission life.
TranSynd™ is bringing a whole new level of functionality and performance to heavy-duty applications, one that is enabling the industries served by medium- and heavy-duty automatic transmissions to operate more efficiently, productively, and for significantly less cost.
TranSynd™ has been tested and approved by Allison Transmission to the Allison TES-295 Transmission Fluid Specification for Severe Duty and Extended Drain Intervals. The product also meets the General Motors DEXRON III specification and has been licensed by General Motors to carry the DEXRON II. Allison Transmission is the world’s leading designer, manufacturer and seller of medium- and heavy-duty automatic transmissions for trucks, buses, off-road and military vehicles and RVs.

* For specific drain interval recommendations contact your Allison distributor / dealer.


Changing Allison Transmission Fluid:
The best way to remove MOST ATF fluid from your transmission, cooler lines, and cooler is to drain fluid, replace spin-on filter and clean magnet, remove the "FROM COOLER" line, install a 2 foot length of 3/4" heater hose, and run into a one gallon translucent container. There are two lines on the passenger's side of the transmission up front near the converter; the lower one is the "To Cooler" line and the upper one is the "From Cooler" line. Both lines are identified on the transmission. Disconnect the "From Cooler" line from the transmission. Add about 2-3 more quarts of TranSynd than you removed and crank it up. When 2-3 quarts of the new fluid comes out of the hose, reinstall "FROM COOLER" line and top off fluid. I do this everyday, and have NEVER had a problem SteveO 01/15/03
In case you haven't seen the Jiffy-Tite style connectors used on the transmission lines before, slide back the plastic cover over the c-clip-shaped spring, then use a small screwdriver to pop the spring out of its groove. KEEP A FINGER ON THE SPRING AS YOU DO THIS, because those springs just love to go flying off into some dark hole where you'll never find it. Once the spring is out, just pull and wiggle on the line until it comes out of the fitting. As soon as you have the line out you can put the spring back into its groove so you don't lose it. The line will snap right back into place with a click when you're done, even with the spring there.
If you are worried:
1) The pump is only running for a few seconds with no oil, since you shut it off as soon as 2 to 3 quarts of oil flows out into the gallon jug.
2) The pump is under a minimal load at idle in Park, so it's not subject to much heat or pressure.
3) The pump bushing in the 1000 series has a Teflon coating that goes a long way toward preventing wear - it'll take a lot more than a few seconds of no oil at no load to make this pump even notice.
With a deep pan, your refill quantity will be 10.5 quarts or roughly 2.5 gallons. This does not include the cooler lines or the transmission cooler. The torque converter holds roughly 4.5 quarts in addition to the 10.5 quarts. I bought a 5 gallons of Transynd and poured two quarts into clean containers future filter changes. The remaining 4.5 gallons were used to flush and fill the transmission. You will have about 58% Transynd after the first change. After the second fluid change using Transynd, you will have about 80% and over 90% at the third change.
Now crank the truck back up, check for leaks, and place it in Drive-Neutral-Reverse then back to PARK.. Do this a few times then check the Fluid level. It should be on the "COLD FULL" line if not add Fluid until.. Then drive it around to get the trans temp up then check to see if it's at the HOT FULL mark, if not add fluid. Be careful about filling to the "hot" mark when the transmission temp is about 190 F. I did and on my next trip with my 12,500 lb 5er, it blew transmission fluid all over the bottom of my truck. I took it to the dealer and found out from their transmission man that the "hot" mark is when the transmission is 240 F. At 190 F leave it down about 1/2 to 1 qt.
Clean magnet. Installed magnet on new filter and installed filter, filled filter with new fluid. Positioned gasket and reinstalled pan. I used the original gasket! Tightened bolts in star pattern, torque bolts (12) to 18 - 21 lb ft. Refilled pan from dipstick, using funnel,
On all automatic transmissions, the engine must be running to get an accurate fluid reading. The reason for this is the amount of fluid in the torque converter and the cooler/cooler lines will drain back into the pan when the engine is shut off. The converter will drain roughly half its volume. The cooler and lines, depending upon routing, can do the same thing but the volume is more difficult to predict. The marks on the dipstick do not take this drainage into consideration, but assumes you have the vehicle in normal running temperatures and conditions.

The proven fluid level check procedures for automatic transmission are as follows: Start the engine, let it run for about 60 seconds; make certain you are on relatively flat level ground, check the fluid. It should read somewhere IN or ABOVE the "cold" band. If all is OK, take off and run the thing until the transmission temperature reaches "normal" operating temperature. If you don't have a transmission temperature gauge, wait until the engine temperature gauge reads where it normally runs after warming up. Stop the vehicle, on relatively flat ground while leaving the engine running, check the fluid again. The transmission fluid level should be somewhere in the "hot" band. If you are in that range, you are good-to-go!
The whole purpose of the two bands (cold/hot) is to account for the fact the transmission fluid will expand as it warms.
How often should you check the transmission fluid? If you know the transmission fluid is/was OK, and there is no evidence of leakage anywhere, cooler lines, oil pan, filter, output seal, etc., it is not necessary to check it again. Unlike engine oil, which is consumed at some rate as a natural process of the internal combustion engine, an automatic transmission does not use fluid. It can most assuredly leak it out! But if it is not leaking, then it's will remain at the same level/volume it was the last time it was checked.

I'll still flush and change every filter i can easily get to, its cheap insurance for me.. Funny how they put "reusable" pan gaskets on something that shouldnt be removed anyhow right?? Anyway, i still like taking the pan off and cleaning it out in our parts washer, getting it cleaned and cleaning the magnet at that time as well.. I dunno, with some of the transmissions i've seen come in with the fluid browner than molasses and the viscosity of it about the same as, i'd much rather just keep my fluid cherry red. We sell lots of transmission flushes and its worth it because that fluid is everything for that transmission, its coolant its propulsion its lubrication... Alli may recommend 100,000 mile change intervals, but then again they arent going to fix it when it breaks at 110,000.. Im sure most transmissions out there could possibly get away with that, BUT, how much more life does it have in it after is the question?? I understand mine wont last forever either, but it should last a lot longer then the guy next door that doesnt do anything to his.. We actually have a customer that has close to 200k on his lumina (4t65e?) and thats probably the most common trans we put in for failures. He does flushes on occasion when i tell him it could use it.. Most of those dont seem to make it 90k without problems.

well guys, i apperciate the info! I took my truck to the dealer and let them change my oil and flush my tranny. i cost me about $450 which shocked the crap out of me and put a dent in my pocket considering i am a broke college student. but like some one was saying the flush machine was nothing but some pumps and guages, but it did its job becuase my truck runs like brand new with 122,500 miles. also the dealership told me that they Do Notreplace the internal filter on the transmissions unless it is broken or you ask them to replace it. although this was an expensive fix, it gave new life to my tranny and i am very pleased with the results.

Called an Allison Tranny dealer to flush and replace with Syn-Tran fluid, shocked, Cost quoted at $600.00, internal an external filters, gasket, $26.00 per quart for Syn-Trans, plus flush an labor, was told that with the Syn-tran fluid would go 150,000 miles before another required change. Thinking of doing it myself with Amoil Syn-Tran, about $250.00 for fluid, plus filters & gasket.

Called an Allison Tranny dealer to flush and replace with Syn-Tran fluid, shocked, Cost quoted at $600.00, internal an external filters, gasket, $26.00 per quart for Syn-Trans, plus flush an labor, was told that with the Syn-tran fluid would go 150,000 miles before another required change. Thinking of doing it myself with Amoil Syn-Tran, about $250.00 for fluid, plus filters & gasket.


You won't need the gasket...

A point of clarification... Oil does not loose it's actual lubricity. The additives get diminished and the contaminates add more abrasive material to the oil that displaces some of the oil on the contact areas.

DEWFPO

I have the deep pan, deep filter, FilterLok, Transynd, oem Allison spin-ons, doing it myself for a lot cheaper.