Transmission flush

[txtrophy85]

Personally I would just drop the pan and replace the filter and fluid.

X2.

flushing it is a death sentence for many a transmission

[Razorback01]

Drain, refill, drive for a week. Drain it again, remove pan, replace filter, and refill.

[.270_Maniac]

Been a mechanic for 10 yrs now. i wont flush mine untill it hits 100k. Thats just my .02. If it aint broke dont fix it!

[troop4]

Difference in what?

Amount of oil on your hands duh

[esp]

X2.

flushing it is a death sentence for many a transmission

This is true !!!
I have a friend that is a transmission mechanic. He told me he always had people bringing Transmissions in that failed after being flushed. They flush them backwards which breaks a lot of the crud loose and then it is circulated thru the transmission. This is when it is done with high mileage. If done frequently it is ok. Just don't wait till you have 100,000 miles to do it. He also says if the fluid is still red and don't smell burnt , there is no need to change it.

[dropem]

DON'T DO IT!!! Your trans. will last longer if you leave it alone. Alot of times when you flush it you will have problems (slipping,loss of gears). If you buy a vehicle new and change it at the recomended mileage you should be ok. When you go past that the sludge that is in there is actually helping to seal the o-rings and flushing that out causes problems.

[sharkhunter]

Difference in what?

Slipping in reverse and in first before the flush. After the flush all shifted like new. It was that or a new transmission. I thought I’d try the flush as a last resort and it helped.

[Swampa]

Difference in what?

As in it wasn't shifting right and real hard when it did. We flushed it and it was smooth as silk again.

[Mike Murphey]

Once you get close to 100,000 miles and the vehicle has never been serviced, don't flush. You will stir up the sludge and it will get into the paper clutches and cause problems.....you really need to start off transmissions with service early on, 30,000 miles, most transmissions shops will tell you to flush and total fluid change out and change filters, then in 30,000 miles change filters, 30,000 miles repeat the process. every other service change fluid/flush...

[BigFoot]

DON'T DO IT!!! Your trans. will last longer if you leave it alone. Alot of times when you flush it you will have problems (slipping,loss of gears). If you buy a vehicle new and change it at the recomended mileage you should be ok. When you go past that the sludge that is in there is actually helping to seal the o-rings and flushing that out causes problems.

This!

[downtown44]

Dont do it if it hasnt been done regularly. The fluid has detergent in it and it will break down any build up and cause you misery.

[ZGIII]

I flushed mine after the first 35k, and have just dropped the pan and changed the filter ever since. Its an 03 silverado with 165 on the clock.

[FULL DRAW]

Drain and fill doesn't do anything. You will get like 4 quarts out maybe but there are like 12 quarts in a V6. I just did it in my wife's Toyota Highlander. Everyone kept telling me to just drain the pan and fill. Wack. What I did was drain and fill but then I took the lines off of the transmission where they go into the radiator and had her turn the car over. Once I saw fluid squirt out I knew which line was the supply to the radiator. With her in the drivers seat I took the small line off and added a 6 foot piece of hose I got from VatoZone and had her let the car run, while the fluid was coming out all black I was adding fluid in through the top and once you see the fluid running red then you know that you have exchanged almost all the old fluid with good clean fluid. Shops wanted like $300 to do the same thing which I did for $70. That was the cost of 12qts of transmission fluid.

[dropem]

Slipping in reverse and in first before the flush. After the flush all shifted like new. It was that or a new transmission. I thought I’d try the flush as a last resort and it helped.

In this case you had a pre-exsisting problem. A trans. flush is the first thing you try. Sometimes it works but not always.

[sharkhunter]

In this case you had a pre-exsisting problem. A trans. flush is the first thing you try. Sometimes it works but not always.

Right... It was my last resort. I had never had one done before. My GMC 4x4 currently has 178K. About 5K post flush I cross my fingers every morning going to work.