Am i in big trouble if i replace transfer case oil with synthetic transfer case oil on a 1974 quadra trac transfer case

tell a problem first so helper is on same page.


you meant I bet, the CENTER DIFF.? NO.
if mean front ,or rear axles say so..
there are 3 differentials , the center is very complex.

WK2 jeep, it is
2013
n May 2013 there was a recall of WKs with the Quadra-Drive II and Quadra-Trac II systems.
This followed cases of cars rolling away due to the transfer case moving into neutral of its own accord, and the owner not having applied the parking brake. The recall revised the Final Drive Control Module (FDCM) software. However, following the recall, there were widespread reports on enthusiast websites but most users never have occasion to use the low ratio and may never discover the fault. Four years after this recall its issues remain unresolved.
. The company is aware of 41 injuries that are potentially related. It was also the cause of actor Anton Yelchin's Deathh. (a very sad story that)

read the wiki on this first
https://en.wikipedia.org/wiki/Jeep_Grand_Cherokee#Transfer_case_actuator

always set the hand brake first, ,
in my jeep I set 1st gear, it is M/T"stick shift.
and with 4wd if a kid moves the transfer case to Neutral the car will roll. unless hand brakes are set hard.
be safe.

this jeep offers
jeep Grand Cherokee offers three 4×4 systems - Quadra-Trac I®, Quadra-Trac II® and Quadra-Drive® II with Electronic Limited-Slip Differential (ELSD)

ELSD is here

Quadra-Drive II Quadra-Drive II uses the New Venture Gear NV245 transfer case mated to front and rear axles containing electronic limited slip differentials or ELSDs. Jeep added traction control in 2005 and starting in 2011 only a rear ELSD is offered, while the front has an open differential.

Applications:
2005-Present Jeep Grand Cherokee (WK, WK2)
ELSD is in the axles
and PCM controls all that

M-ELSD is here



SOLVED ,where is it at: IS HERE

ELSD module is located under the rear drivers seat. If you remove the bolts for the seat legs you can lift the rear cushion up and flip the carpet forward. It will be right there with three plugs.

it has no oil, dont run it dry

SELECT TRAC USES MOPAR PLUS 4 OR EQUIVALENT. THE QUADRA TRAC USES MOPAR TRANSFER CASE FLUID OR EQUIVALENT.

Possibly, but there may be a difference in the spline count on the coupler you'd need to deal with. There is a lot of info on swaps at jeepforums.com that may be helpful to you in that regard.

on a select trac---mopar plus 4 atf or equivalent, quadra trac----mopar transfer case fluid or equivalent,

Use ATF+4

Do not use Dexron or Mercon

Oil is added to transfer case through a plug usually located about half way up the back of the case.
When making a diagnosis, a good tech relies upon previous experience matching that to known symptoms, then upon teardown to verify his ideas. A good working knowledge is essential so the tech can picture in his mind what is happening inside the unit.(i once knew an old tech who could sit in the shop office and make a correct diagnosis as another tech drove a vehicle into the shop) That's rare, but there are good people out there! Your coupler may have to be removed, but that largely depends upon what the shop sees and feels.
Good luck

Under normal driving conditions, the system operates conventionally, and the majority of available torque is applied to the rear wheels. However, when front-to-rear wheel speed variations exist, the progressive differential transfers torque to the axle with the better traction, thus minimizing wheel spin and maximizing control.
The key to this design is a progressive coupling Progressive Coupling , which is supplied with pressurized oil by a gerotor style pump. The pump rotor and case are driven by the front and rear driveshafts respectively, and deliver pressurized oil flow to the coupling in proportion to their speed difference. The progressive coupling contains a multi-disc clutch pack that is alternately splined to the front and rear driveshafts, and controls torque variation between the front and rear driveshafts as dictated by the pump.
A set of orifices and valves control the speed-differential starting point and rate of torque transfer rise in the clutch. This allows the system to disregard the normal speed differences between axles that result from variations in front-to-rear loading and typical cornering.
Transfer case operating ranges are selected with a floor mounted shift lever. The shift lever is connected to the transfer case range lever by an adjustable cable. Range positions are marked on the shifter bezel plate

if the shifter is the same and they have the same front driveshaft then yes

I have the same problem the switch is on the transfer case! what your talking about is your vehicale information center. the stupid thing sucks I also replaced it but it only comes on some times now. dont know!