98 Cherokee Sport. 4.0L

Going to do a simple trans drain and refill, how many quarts do I need?

 

Approximately 3.75 quarts emerges from the transmission drain plug. Do for a drain-n-fill that's how much you go through at a time.

The entire system capacity is 12 quarts.

Be sure to buy Dexron III/Mercon fluid, also sold as Dex/Merc or even D/M.

This applies to the Aisin-Warner AW4 transmission only. This is the automatic behind the 4.0L. Since you provided no information on your vehicle I assumed you have this combo. 2.5L with the 32RH is different.

 

At least 9 quarts. Other folks may have different ideas.

 

Pretty sure you want 0.00 quarts of ATF. What you want is Dex/Merc III

 

If doing a drain and fill buy a 1 gallon jug of the CORRECT fluid for your transmission. Drain and fill till 1/2 way between the low and full mark on the stick. warm everything up and recheck and adjust the levels.

 

ATF is Automatic Transmission Fluid.

I think what the captain means is not ATF+4 fluid.

 

Right, just make sure it isn't ATF+4

Perhaps I'd make more sense if I didn't reply to posts before 9am...lol

 

The AW4 ATF capacity is 16.5 pints = 8.25 quarts.

 

OK guys now you have me confused! It's a 98 Cherokee with 4.0L and the AW4 trans, that's the one that's NOT 4WD All the time.

Reading "elsewhere" I read ATF-3 or 4 is Ok. Several of you folks suggest ATF-4 in no good, why? Is ATF-3 Ok?

FWIW, I will be buying DEX 111.

 

Since you are buying DEXIII there is no particular rush but I will just say this until the others get back on. ATF+3 and +4 are for Chrysler transmissions. The AW4 is not a Chrysler transmission, it is built by Aisin-Warner and Toyota may be involved. I'm too lazy to look it up right now.

A quick search will tell you all you would ever want to know or I'm sure one of the guys who has this firmly in mind will get back on.

 

1999 FSM says 8.45 quarts for transmission + torque converter. Add in lines and cooler... presto you get twelve ish sorta. I dunno I got the number from cruiser54 lol

Neither are okay. ATF+3 and ATF+4 cause slippage in AW4s. They're for Chrysler transmissions.

What happened is Chrysler stopped carrying Dexron, a licensed GM fluid, after the powertrain warranty expired on the last XJ. The rest of their vehicles had been using Chrysler transmissions for some time. They issued a technical bulletin instructing dealerships to use their own cheap and readily stocked ATF since it didn't matter anymore. Most high mileage AW4s run with Chrysler ATF experience slipping.

Aisin-Warner was originally a partnership between Aisin Seiki and BorgWarner. Toyota owns 30% of Aisin Seiki and is a major OEM customer. BorgWarner eventually bailed, Aisin AW is now about half Toyota and half Aisin Seiki... so about 65% Toyota I suppose.

Fun fact: Aisin-Warner also sold the AW4 to Volvo, who recommend and will only warranty the original manufacturer-specified Dexron ATF.

 

Excellent education, many thanks!

 

Toyota also used it extensively as the A340E.
For giggles, google the different vehicles Toyota used it in. Lexus too. (20-some) The only tangible difference was Toyota's TCMs were considerably more refined, with better shift logic.

 

The Toyota connection to the AW4 is one of the reasons I bought an XJ. The variation used in Toyota trucks is bullet proof and the XJ's version is right there with it. I wouldn't own a vehicle with a Chrysler automatic. From the K platform to the Dakota, those flimsy units have kept rebuilders in business for decades.

 

Yes, Section 21 of the '99 FSM says the capacity is 8.45 quarts (Section 0 says 8.25 quarts).

Section 21 also says when the trans is overhauled and the TC was drained or replaced, to add 5 quarts.

When I pulled my engine I drained the trans and replaced the trans cooler lines and couplers (radiator cooler drained). I got nearly 6 quarts from this. I didn't remove the TC and there was fluid still in it but below the centerline of the TC. I figure there was at least 2 quarts remaining in the TC.

So... 8.45 quarts for the system sounds about right.

If there was an external oil cooler there would be more in the system. 3.55 quarts in the external cooler = 12 quarts (?). I don't know.