I took my car in this morning to the dealer for a tranny flush and my service advisor recommends not doing it because of the possibility that some build-up deposits might get dislodged during the flush and get stuck/block something inside the tranny that will cause a bigger problem later. He recommended just doing a drain and re-fill.

Has anyone had any issues/problem after a tranny flush? By the way, my car has 70K miles and I had previously done a drain/re-fill at 30K miles.

By the way, I still had a tranny flush done against his recommendation.

 

I thought that was the whole purpose of a flush!

 

He was concerned that it might not get flushed out and end up blocking something inside the tranny that could potentially cause damage later on. I have heard this being discussed on the BMW tranny's w/ lifetime AT fluid, but first time on the G's.
I was just bringing it up here to see if anyone has had any issues after a tranny flush. I hope i'm not the first one (knock on wood!).

 

I doubt you would have issues unless the current fluid in the tranny hasn't been maintained properly. From what I understand, a flush would simply involve disconnected the AT fluid from the AT Oil cooler and keeping the AT fluid topped off. After a while, the fluid coming out will be fresh fluid and then the flush is complete. Servicing the pan is also advisable at this time.

 

OK, so I just got my car back and realized they put Quaker State ATF into my tranny. WTF! I asked the service guy and he said that's what they use for their tranny flush/fill since the J-matic fluid is too expensive.

What the hell is going on w/ this Infiniti dealer!! I'll probably have it flushed after 15K and use my own ATF(Redline or Amsoil) and take it to an independent shop.

 

i was told that anything but j-matic will void the warranty... i was also told (again by my dealer) that a tranny flush is recommended every 2 yrs or a drain/refill every year.

i seriously doubt that a deposit is going to dislodge...

and you are paying for the fluid, what do they care what it costs?

 

Call Infiniti USA or Canada (as appropriate). Use of non-J-matic fluid, even a very small amount will likely void your warranty. If you have any issues with tranny break-down in the future, you want a record of this to avoid a costly bill later!

 

Using the BG Flush machine you first pour in BG Quick Clean for transmissions this solvent and detergent loosens the material and dissolves any varnish into solution in ATF............you circulate the solvent on the lift by rowing thru each gear and reving up to 3,000 and holding for a few minutes in EACH GEAR [5 gears plus neutral] then you let the at internal pump transfer out the old varnishy ATF and replace with brand new simultaneously.

Watch out techs take short cuts on the time in each gear to save 10 minutes.

I time the 10 quart [+4 for good measure] transfer this tells me the condition of pumps and seals plus ocassion really dirty units get the entire process repeated depending on the color of the initial and final ATF........white paper towel test compared to brand new out of bottle ATF.

On my own cars I take an hour, on customers 30 minutes, some try to do the job in 15.

Let the look and smell of ATF guide you to perfection.