Hmm so if i just want to drain/refill I will need approx 4qts of j-matic? And can someone elaborate more on the rear diff? My car has just past the 30k mark and I want to keep it running strong.

Thanks
-Yi

 

Yes..4qts of jmatic. Just drain and fill..super easy. As for the diff, get 2 bottles of 80w-90 or 75w-90 diff lube from your local autoparts store. If you want to go more than 60k miles, I would suggest using a synthetic. mobil1 makes a 75w-90 synthetic for a decent price, but it's still much more expensive than the non synthetic stuff. Again...just drain and fill...very very easy.

 

I'm about to change my friends transmission and rear diff. oil.

Just so I'm clear and what to buy, I'll need 4qts of Jmatic for the trannsmission and I can use 75w-90 Mobil Synthetic for his rear?

Is there any other oil I can use for his tranny or does it HAVE to be the jmatic fluid?

 

Very Highly recommended to use the jmatic fluid. 75w-90 mobil synthetic works fine.

 

you HAVE to use it if you WANT your warranty lol

 

Please don't do any more than the minimum recommended in manual. Our 3 shops and our 14 employees depend on the revenue we make from replacing Infiniti and Lexus transmissions after the warranty has expired. The least expensive FWD are $3300 and the most expensive RWD is $5300............4 wheel drive units are even nicer, rank right up there with CVT.

Why would we beg/suggest a $140-$250 fluid exchange when we can just wait and get 20 times as much with a higher % of profit.

Always a learning experience WHEN the owner gets to replace their first expensive 5AT.

 

Just called T3 in Decatur, GA can you tell me more about the BG product you use instead of J matic? Also, what is the BG cleaner and conditioner kit included in the flush? I'm at 98k and I'm probably going to do the flush over th drain and fill.... I'm going to be breaking about even either way:

1. Buy 15 qts J matic and pay labor
2. Pay for flush including BG materials

Anyone else have any input?

Thanks

 

You are given a choice [at your own risk and cost] between BG synthetic ATF and oem Nissan J or it's newer replacement. The problem is our Infiniti dealers never have much in stock so they cannot sell it to us, because they discourage flushes to gain tranny replacement profits.

The BG costs ~ $7 per quart and Oem Nissan $11 per quart, so there is a $56 difference.

This is pure and simple hearsay but I have been told that some dealers substitute the BG when low on oem?

JATCO the 5AT supplier analyses the ATF on every warranty returned unit and will not reimburse Nissan Warranty if another ATF is found..........whether this gets backcharged to dealer and customer is unknown?

Owners are dammed if they do service [improperly] and dammed if they don't.

I always recomend an annual examination of ATF to try to catch the color change and destaturation before much damage is done from circulating clutch material [abasive grit].
Use a few drops of old ATF on white paper towel and compare with brand new ATF for color and spread time.
When it is desaturated clear long before brown too late!

 

BG makes a solvent 11 ounce flush to use and circulated to clean up the loose friction material and dissolve varnish during a 15 minute rowing thru gears wheels off ground process BEFORE the old ATF is removed in the exchange process.

BG makes a ATF treatment which contains zinc peak pressure additive that has been known to improve life in old 4AT whether it works in newer 5AT is unknown.

Personnally I would just use the BG preSolvent and Nissan ATF on newer transmissions if you are doing 30k or every 2 year ATF changes.

Unlike a 19 year history on the old 1990-2001 4AT units, the 2002 5AT redesign is less well known as to life expectancy and failure modes.

6 years [summer 2002] and slow build up in volume means we should know soon as 7 years or 120k is the usual failure start.

I always warn 5AT customers to SAVE the $4500+ a replacement tranny will cost so they are not caught short and surprised.

My 1999 AMG MB C43 caught even me 2 years ago at 108k with a $5300 wholesale bill when the tranny exploded.

 

^ great advice - esp on testing the fluid condition - thanks Q45. Given that there is such a convenient drain plug on the 5AT, there is no reason not to do periodic drain/fills.

 

Warranty isnt an issue for me at this point, thanks for the great info, see you guys soon.

 

Hi guys, first post/first time Infiniti owner ... So I'm still not clear after reading quite a bit about transmission fluid - flush vs. drain - which is better ... I'm at 36k miles and I'll do one or the other but still can't figure out which way to go. Thanks for the input, guys.

 

My dealer recommended drain/fill every year or flush every 2 yrs. If you are going to do it yourself, you are likely only going to have the option to drain/fill. It's a piece of cake on ramps if you are comfortable reading the dip stick and have the FSM procedure for doing so.