Good as Mopar ATF+4

[DavidC]

Per the 99 FSM
FLUID LEVEL CHECK
Transmission fluid level should be checked monthly
under normal operation. If the vehicle is used for
trailer towing or similar heavy load hauling, check
fluid level and condition weekly. Fluid level is
checked with the engine running at curb idle speed,
the transmission in NEUTRAL and the transmission
fluid at normal operating temperature.
FLUID LEVEL CHECK PROCEDURE
(1) Transmission fluid must be at normal operating
temperature for accurate fluid level check. Drive
vehicle if necessary to bring fluid temperature up to
normal hot operating temperature of 82°C (180°F).
(2) Position vehicle on level surface.
(3) Start and run engine at curb idle speed.
(4) Apply parking brakes.
(5) Shift transmission momentarily into all gear
ranges. Then shift transmission back to Neutral.
(6) Clean top of filler tube and dipstick to keep
dirt from entering tube.
(7) Remove dipstick (Fig. 11) and check fluid level
as follows:
(a) Correct acceptable level is in crosshatch area.
(b) Correct maximum level is to MAX arrow
mark.
(c) Incorrect level is at or below MIN line.
(d) If fluid is low, add only enough Mopart ATF
Plus 3 to restore correct level. Do not overfill.
CAUTION: Do not overfill the transmission. Overfilling
may cause leakage out the pump vent which
can be mistaken for a pump seal leak. Overfilling
will also cause fluid aeration and foaming as the
excess fluid is picked up and churned by the gear
train. This will significantly reduce fluid life.

 

[BigPapa]

Unless the VB has been modified the 47RH nor the 47RE pumps fluid in park. I can’t speak to the 48RE or the Aisin.

 

[Ozymandias]

48 same, all Trannys from this series don't pump in Park.

 

[MojaveJoe]

Since we are on the subject...How would I cool my transmission fluid if parked on the side of the road with hot fluid? transmission in park or neutral with engine running?

 

[DavidC]

Neutral, guaranteed circulation

 

[BigPapa]

Yes, as DC said, neutral with the engine running.

 

[Wayne M.]

Yes, as DC said, neutral with the engine running.

If you look close enough in your owners manual, it probably says it.

 

[cerberusiam]

Since we are on the subject...How would I cool my transmission fluid if parked on the side of the road with hot fluid? transmission in park or neutral with engine running?

Drive it and get the TC locked, best thing you can do. Idling in neutral does not flow much oil at all thru the cooling system and the fan doe snot draw enough air to cool very fast. With the TC locked the bulk of the fluid is pushed thru the cooler and ther enhanced air flow will cool much faster.

 

[DavidC]

Agree, getting the TC locked cools the fastest but not always possible, in that case neutral is the next option. I use the neutral a lot when 5mph traffic, move 20 feet stop repeat.

 

[Mhennessy]

I run the O'Rielly brand ATF-4. It seems like they are always out of the gallon jugs so I fill a basket with the quarts. (deep pan). I would not hesitate to run the Wally World brand either but i don't shop there. lol

 

[MojaveJoe]

So far, well over 1000 miles in 90-100F conditions with no trans fluid temps over 230F. I believe my trans fluid previously overheated is fine, but I cannot discount my MagHytec double deep pan that the extra gallon of fluid passes into, creating 20F temp drop from max to where trans fluid is picked up 2" lower as noted by my Edge CS2 monitor showing both temps. Thanks all for your input which has considerably lowered my stress levels when pulling long hills at high coolant and EGT temps.

 

[SnoKing]

Typo Alert....Yes I meant 240/230

47RE Was a typo also!! Think 48RE!

 

[SnoKing]

So far, well over 1000 miles in 90-100F conditions with no trans fluid temps over 230F. I believe my trans fluid previously overheated is fine, but I cannot discount my MagHytec double deep pan that the extra gallon of fluid passes into, creating 20F temp drop from max to where trans fluid is picked up 2" lower as noted by my Edge CS2 monitor showing both temps. Thanks all for your input which has considerably lowered my stress levels when pulling long hills at high coolant and EGT temps.

230 in the pan is pretty hot. Probes in the transmission pan will tell you when you have just destroyed your transmission. 230-235 at the output line was my warning point for my built DTT 47RE. I had a probe in the output line and one in the pan with a switch to one meter. Pan ran 160-170, quit looking at that reading and only watched the output line.

 

[Wiredawg]

Friends,

Absolutely nothing wrong with running other brands of ATF+4, but if you have Amazon and planning ahead on maintenance, this isn't bad free shipping.

Just one more option.


Cheers, Ron

 

[sag2]

230 in the pan is pretty hot. Probes in the transmission pan will tell you when you have just destroyed your transmission. 230-235 at the output line was my warning point for my built DTT 47RE. I had a probe in the output line and one in the pan with a switch to one meter. Pan ran 160-170, quit looking at that reading and only watched the output line.

230 in the pan is warm, but not even close to destroying the transmission. The cooler outlet line is right off the torque converter and if it isn't locked up can exceed 300 degrees in a heartbeat if you are stalled like trying to back up the trailer up an incline.

 

[MojaveJoe]

230F was the Cummins computer reading. The mid pan temp was 20F lower and about where the filter pickup was moved down to. I will be towing in some more 100+ temps in Las Vegas Sunday. Will report back my experience.