I am thinking about giving my 5AT Coupe a Transmission Flush. I made a few calls to both the infiniti dealers and nissan dealers within 30 mils from NYC and got quotes from $170~$280. I also received quotes for drain and fill for about $80~$120. What triggered me to write this thread is one of the nissan dealer told me that they don't recommend doing a flush for this transmission although they can do it for me if I want to. They said it only need a drain and fill. Another dealer told me that they use a different fluid to flush, drain it and then fill it with the Infiniti recommend J-matic fluid.

So my questions are:

1. Should we flush our tranny?

2. If so, should they use J-matic to flush? Or a general question is if a different fluid is used for flush than fill.

3. did anyone near NYC did a flush or fluid change for your 5AT? how much and which dealer do you recommend?

 

Proceedure from the manual

 

Thank you for the manual. However, I thought the flush is probably more thorough than the drain and fill as show in the manual. Don't you think so?

 

How many miles you have on your G?

 

Yes, you should flush the 5AT every 30K miles if you want to keep the car a long time. If not, just do the drain and fill. Whats the difference?

Well, a drain and fill is done with the engine off. Open the drain and let it flow out. Fill up with the same volume you got out (absolutely must be J-matic regardless of D/F or flush), warm it up, then top off. Ok, but guess what? you probably have 50% of the old, nasty fluid still in the torque convertor.

A flush is just that. You drain and fill with the engine running so that the whole system including the TC is flushed until clean. Usually takes about 12 quarts to do. J-Matic is $12-14/qt., so $150 is just in fluid costs.

IMO, if you are going to go through the hassle to do it, do it right and flush it.But dont flush it yourself, you'll get that stinky **** all over the place.

 

If your going to do it...do it right and flush it . THEY DONT USE A DIFFERENT fluid to flush it . They just drain and fill at the same time till the fluid being drained , comes out clean

 

You aren't kidding. The only thing that smells worse is rear diff fluid. Is it made from roadkill or something?

 

Based on your description of how flush is done, it sounds a lot like the procedure described in the manual posted by inTgr8r above. If you read it carefully, they are telling you to "pour in new fluid at the A/T fluid charging pipe with the engine idling and at the same time drain the old fluid from the radiator cooler hose return side".

However, when I was talking to one of the dealers, he sounded like they use a special eqpt to "power flush" it. Anyone know what that means?

 

bunch O pansys....
afraid of a little odor

 

Yeah that's right Intgr8r. There is nothing like that smell from gear oil synthetic or not. It lasts and lasts. I immediately ditch the rags contaminated with it.

 

The "special eqpt" is a closed-loop system that they tie into the lines going to the trans cooler up front. It sucks and pumps at the same time like a good girl. The same amount of fresh in as it sucks out. And it swallows too so no mess.