Actually the word FLUSH is not correct.If using the BG type machine its a fliud EXCHANGE.There has been some issues with FLUSH machines.

 

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That's because it's not a complete flush, some of the old fluid is still recyled back into the tranny doing it through the lines.

 

Absolutely no need to drop the pan and replace the filter with only 7kmi.
That's crazy talk.


Unhooking the return line and dropping it into a bucket is the only way to "flush" on your own.
1.)Start your truck up and let the fluid pour into the bucket until it sputters(now the pan is empty). turn truck off.
2.)Re-fill with 7 or 8qts of fluid and repeat step 1.
3.)repeat step 2.
4.) refill back-up, but this time when you start, you need to watch when the fluid goes red. Since you have only 7kmi, this will be difficult, so the best way is to either waste some fluid or keep track of how much fluid gets pumped into your bucket.
You will use roughly 17qts of fluid to replace the old with the new. This is 4.25gallons worth.
On your 3rd fill and pump, you will only need to pump out half the fluid in the pan. So, it's gonna be a guess with the time if you dont wanna throw away any money. You can time with a stopwatch how long it takes to drain your pan. Then just shut your truck off after half that time on the 3rd drain.

Easiest way is to pay the dealer the small amount they are asking. It will be hassle free and very clean for you, plus you wont have to get rid of the fluid and deal with theclean up on your own.
Doing it yourself or having the dealer do it will not hurt or effect your transmission in any way what-so-ever. All you are doing is letting the truck pump the fluid in it's usual manner and instead of allowing the fluid to return into the pan, it goes into the bucket. Same thing the dealer does. Anyone who says that flushes are bad or exhanges if you will don't know what they are talking about. The dealers machine does not have reverse flow if anyone thinks that either. This is perfectly safe and your transmission won't even know the difference.

 

Its not a flush and there are flush machines that use pressure.Exchange machines are a bladder.BG is a company that sells oil products and radiator,power steering and trans fliud exchange machines.Find more BG equipment in shops then any other brand.

 

I was at the mechanics having my vette's trans serviced and he had a BG Flush machine. I asked him about the flush process and he told me that the difference between the flush and the fluid exchange is wether they used the chemical s for cleaning the transmission. He said that the flush uses the chemicals and should be done every 50k miles but if you don't keep up with it, then don't do it at all. Seems that the sludge builds up over time and because the chemicals will clean out the transmission, the sludge may get trapped in the transmission valve body and then you need a rebuild. If you do it every 50k miles there won't be much sludge and you'll be OK.

I asked about the fluid exchange and basicaly it's the flush minus the chemicals. The BG machine capacity is 16 quarts and the trans dry capacity is almost 17 quarts (including the hoses and trans fluid cooler) so the machine will not get all of the old fluid out.

By the way, the BG machine has the ability to make it's own pressure and in some vehicles it's needed but on others the trans own pressure is enough.

 

One hooks to the in and out transmission cooler lines and uses the vehicles pump while running and the other hooks directly to the pump inlet which flushes it completely using extra fluids and cost more is the difference... I forgot to mention that using the cooler lines dose not require changing the filter and using the pump inlet does.

 

1954Radio is correct.Flush and exchange are a lot more different then a small can of cleaner.BG makes a cleaner.Used it on hundereds of transmissuions.Some had never been serviced in 100k.I never had a issue doing such.

 

Actually, the "flush" process can be done either way. The one where you connect to the trans pump is the preferred way as 1954Radio mentioned. The BG machine I was talking about flushes using the cooler lines and calls out for adding a can of BG Quick Clean. Reading the description down on the mchine, it states that it cleans the filter screen which would be impossible if it was hooked up to the pump


BG Quick Clean for Automatic Transmissions BG Quick Clean for Automatic Transmissions is a safe and effective solvent/dispersant cleaner that will quickly remove accumulated deposits from the valve body, filter screen and other automatic transmission components. This product is designed for use in the BG Power Flush and Fluid Exchange System. Part No. 106 11 oz. (325 mL) can
BG Big Dawg® II
Power Flush and Fluid Exchange System The BG Big Dawg® II Power Flush and Fluid Exchange System is the most effective and efficient service for extending transmission life. From small passenger cars to medium capacity, heavy duty vehicles, the BG Big Dawg® II can service all automatic transmissions up through 42 quart (40 Liter) capacity in as little as 2 minutes. The fluid exchange is fully automatic and requires no monitoring during use. When the exchange is complete, the system simply goes into bypass mode. The only power required to operate the system is the vehicle’s transmission pump, making the system truly portable and simple to hook up.

The BG Big Dawg® II is designed to be used with BG Quick Clean for Automatic Transmissions, Part No. 106, which is added to the transmission fluid just before servicing to remove deposits from the valve body, filter screen and other transmission components. After the BG Big Dawg® II has thoroughly flushed the transmission and replaced used fluid with new‚ BG ATC Plus‚ Part No. 310, is added to extend the effective life of the transmission fluid. The special antioxidants in BG ATC Plus prevent harmful gum and varnish deposits from forming inside the transmission. Part No. PF19 Part No. PF19