Having flush performed on transomission

[mattd1979]

I am getting my transmission flushed at my buddy's shop. What is the exact procedure for the flush just incase it is different from any other flush on other automatic transmissions from other manufactures? He has a flush machine and he has two different products that he uses. One is by BG products and the other is Winns. Also, I have a bottle of Lubeguard red. The bottle says to use 1 ounce per quart. The transmission holds 9 1/2 quarts and the bottle is 10 ounces. Should the whole bottle be added?
Modified by mattd1979 at 10:25 PM 11/6/2008

[qship96]

How many total miles are on this transmission? How many miles since last fluid replacement? What color is the fluid on dipstick? Any operating issues with it?

Use a full synthetic ATF....Mobil 1, Redline D4, Amsoil if you must. I use Redline D4 atf and never add any lubegard or other additive....my transmission is working like new at almost 220,000 miles. If you are using the lubegard,just follow their instructions on the label.

Does your Q have the external transmission filter kit mounted up behind the radiator? If so...replace the filter, as it is a much smaller particle trapping filter than the internal screen filter, and probobly is in bypass mode by now-allowing all the particles to circulate thru atf and accelerate transmission wear.

[mattd1979]

The transmission currently has 120,000 miles on it. I recently reinstalled it because the otherone that I had lost all forward gears except for 1st. The transmission is a Nissan reman. I have an external cooler on it and I also have an external inline trans filter on it that also has a magnet lining the inside to help catch any metal particles that my pass thru the filter. When I recently installed it, I had to add about 9 quarts of fluid to it. I just got it from napa.

[maxnix]

The transmission currently has 120,000 miles on it..... I just got it from napa.

Say what?

A flush is technically a chemical added immendiately before the mechanical fluid exchange is initiated. It will pull some varnish into solution with the ATF.

[Q45tech]

The trick with the chemical solvent flush is to pour in and heat up to operating temperature which takes 15 minutes..............it takes 3.5 minutes for all the ATF to circulate thru external heat exchanger ONCE.

Ideally with the vehicle on a lift row thru each gear or 2-3 minutes [P, N. 1,2,3,4, R in each the wheels spinning ~ 7x3 = 20 minutes]. THEN start the ATF replacemnt process which only takes 3/5 minutes IF the internal are good.

Varnish dissolves into solvent solution over a very narrow range just before the solvent evaporates at 174F- 212F.

[hwyix]

If it was me, I would skip the bg/wins crap or what ever and just use the flush machine.

I can not remember which products or which transmission it was on but I do remember some of those products mess up the transmission. Flush machine is great though. It is really the only way to clean fluid every where.

[Infinitiguy19]

SO when flushing the transmission it would have to be cleaned with something though because to me that like a "drain and refill" only a complete "drain and refill"

with your method though the transmission would be refilled again right? And if so with what?

Bottom line: whats the use of going that route if your paying the same money?

[hwyix]

There is a huge difference between drain and fill and using a flush machine when doing a transmission flush. On a drain and fill at best you might get half of the fluid ( just the stuff in the pan). I would use the flush machine and run three times the amount of fluid what ever the books says the transimission/lines/tq takes. Then you will have clean fluid every where.

If your 100% sure that the bg/wins product will not effect your particular transmission then go ahead. I will not run in it my car or my customers cars.

[Infinitiguy19]

Yea but BG products (I don't know about wins products) aren't available over the counter for any Joe blow to buy. and there haven't been any lawsuits that I have heard of against them, At least if there product(s) were used correctly.

Plus Q45Tech uses them and he is the smartest person on this forum that I know of.

But I do agree with you on running the flush 3 times but that only you if you know the guy doing it really well or if you own your own your own machine.

[hwyix]

Yea but BG products (I don't know about wins products) aren't available over the counter for any Joe blow to buy. and there haven't been any lawsuits that I have heard of against them, At least if there product(s) were used correctly.

That is because the repair shop/dealership just eats it. If I flushed your car todayand you come back to me in six months with a slipping transmission please tell me how I can in court of law prove BG/wins/fill in the blank here product was the cause. How much money would that cost? If I knew the right engineers who could prove it. How much, how much? Then the lawyer fees, court fees. Wouldn't it just be easier to stick in a rebuilt transmission? Now maybe if I was a chainlike firestone or something like that. They have 1000+ of shops. It might be in there best interest to get someone else to foot the bill. Little or me or single dealership is not going to fight that fight.

I would even just be happy if I could the parts place to pay me for my time when I install they brand new part that does not work. I have to eat that. I don't even get a sorry. I just a get another new part. I get reinstall it for free.

I am sure BG/win/what ever works for 99% of the cars/vans, etc... I don't remember which ones gave us problems. I just don't think it works well enough for the risk. just my .02