I changed my ATF about 3 weeks ago and ever since then when I accelerate from a rolling stop the gears change so hard that it makes my tires lose traction. I want to say that it goes from 2nd to 1st real fast then back to 2nd is what it seems like. Anyone else having this problem?

I'm not sure if its going away on its own or if its suppose to be like that. Accelerating from a complete stop seems to be fine but when I slow down and don't stop and continue to go again, it does it again. One example is: I slow down for a speed bump and when I accelerate again the revs suddenly jump and come back to normal. Sometimes if I put too much throttle it will engage really harsh with a clunk. 5speedAT

 

sounds like your tranny is slipping... what kind of ATF did you use? Infiniti's can be very picky with the type of ATF and they simply void any warranty concerns as well if you didnt use Nissan ATF Type-S(or J if older model)

Also im guessing you just did the ~3-4qt drain and fill, did you measure how much came out and replaced with the same amount? Check the ATF level with the dipstick behind the engine to assure proper level with proper procedure, with car warmed up and running. These trannies have to have the proper level to work properly.

Lastly, make sure there is no atf leak from the drain plug.

 

Hey, I did check the level and only did a drain and fill. Everything seemed good and I used Valvoline Full Synthetic Dextron IV.

And no warranty You think I should change the fluid to Nissan ATF Type S?? I didn't think there would be much of a difference.

 

^ Dude covered it all...

I would use OE fluids only on the 5AT

 

YES, emphatically YES!! Given that you will void your warranty without it normally, I think Infiniti is pretty clear about its necessity.

The thing is that you now must to do a complete, 100% flush of all the tranny fluid to be sure that you get ALL of that Dextron out. I'd try and shop the fluid online for the best pricing. It's like 8 - 10 bucks a quart at a discount; can be far worse at regular dealer prices.

 

FYI, According to my local dealerships, Nissan/Infiniti no longer make the type J tranny fluid. You can't find it anymore and any that you might see available is old stock from a few years ago now. Currently, the type J part number is superseded by type S. I am told type S is 100% reverse compatible with the old type J, but not the other way around.

 

How many warnings are plastered all over the engine bay and manual? Alot lol.

Hope no damage has been done, and you might need to get a 12qt+ fluid exchange to get as much valvoline out.

 

Yes matic-S works, and do not try to find or get J its a waste of time and outdated

 

Uhh . .. Isn't that pretty much what I just said?

 

^ yea, I was Confirming what the dealer told you

 

^^ Gotcha.

I too was wonder if it is possible that 3 weeks worth of driving could have damaged his tranny. Do you think it's likely?

 

I can only do this on Tuesday and will follow advice of flushing and putting in Matic S fluid. But everything seems normal besides that; I guess I'll have to granny ride it until then. Do you guys think it will be okay until then?

 

I recently had my trans fluid flush at a nissan dealership and they used the valvoline brand. I have no issues. I have a 07 coupe.

 

^ Thats because you have the older G which required Matic-J and Valvoline successful 'unlocked the secret' if you will of the Matic-J formula as you can see under Specs HERE which was one of the reasons why Nissan decided to introduce the new Matic-S with some new additives and making it syn to keep earning the $$ and keep ppl from using other fluids.

However other companies have not spent time and money in this R&D and thus will not stand behind you if your tranny goes out, even Valvoline is not going to care much but at least they spent tthe time for the R&D and came out with something compatible for older Infinitis that use Matic-J NOT matic-S. Nissan has put a warning everywhere and therefore make themselves non-liable for any tranny repairs if they can prove the fluid is not genuine Nissan that they can do very easily for the Matic-S folks.

Obviously using it is ok and wont cause problems and many ppl use many different ATFs and have no issues while others do at the end of the day it will always be a risk.

Just read THIS TSB and then decide if it really worth losing your powertrain warranty by trying other products which are not going to offer nay extra protection than Matic-S and only save you ~$20

At the end of the day it your car and your choice, just make a well informed decision

 

Hm, yes I replied to another member here that: I don't have powertrain warranty. Reason is because my vehicle has 89000 miles on it and I only have a bumper to bumper warranty.

I don't think it will cause any type of failure after 3-4 weeks but I will change it again soon when I have time to the right fluid. It runs fine, just a little bit of slippage when the gears get a little bit "confused" at low speeds. I really doubt that much damage was done in such a short amount of time unless someone can tell me how.