Transfer case oil - 1993 Jeep Wrangler

manual transmission --- 80w-90 for the gearbox and transfer case
diff is 80-90 oep if a straight diff and different if a limited slip diff gear box is around the 2.5 ltrs as is the diff each
LiSiD oil can be used in LiSiD diffs and straight diffs but straight oil cannot be used in lisid diffs
the transfer case uses the same as the box but the quantity you will have to check in the lubrication section of the user manual
many user manuals recommend a lighter straight oil for transfer cases and boxes ( 30 straight oil) but I find that the light oil promotes bearing wear and gear problems as the oil squeezes out under load

proper oil in transfer case ? most transfer cases have a separate oil reservoir, heavy duty off roading sometimes makes a hole in oil seals and oil leaks out , I allways wash off all my oil seals surfaces after a visit to the MUD PIT saves me a ton on fixing seals

what tranny you got>>>>>???? in front of XFR case>???? automatic?
what is the question.
does it have it, yes on 4wd option
what type,
what viscosity.
how to do it, ?
how often.?
it holds 3 pints
the early cars used 5w-30 engine oil in tranny m/t box and transfer case and was shared oil.
http://www.pirate4x4.com/forum/attachments/isuzu/345441d1199634929-mua5-transfer-case-fluids-chapter8_16.jpg

MSG-5ETC, MSG-5FTC, ISUZU Transfer Case

Most suvs have the transfer case linked to the transmission. Best is to take both out at the same time.Generally:

1. Disconnect the battery
2. Unplug all wires from the transmission - transfer case unit. Make sure you mark them so you can reconnect them properly
3. Get inside the car and remove the shift lever(s)
4. Remove the starter
5. Remove the clutch slave if there's one or disconnect all cables from the unit
6. Support the car on stands so you can work easily under it.
7. Drain the oil from the unit may have 1 or 2 drain plugs
8. Remove the shafts making sure you marked the alignment where they are joined
9. Support both the engine and the transmission unit with the appropriate jacks
10. Unbolt the transmission from the engine
11. Remove the unit support (s)
12. Remove the unit from the car.

Important to remember the type of oil that goes in the trans and in the transfer case. They may not be the same. Also, some electrical transfer cases don't use any oil.

To fill transfer, you didnt list the type of truck but all are about the same.
what is not the same is the type of oil used in the transfer case, its important to use the correct type. the transfer case is fill from the side, theres a drain plug at the rear bottom and then the fill is mid way up on the side of the case, you will fill until oil runs back out, allow extra oil to drain when stream is low put plug in. hope this helps.

it is from gm a blue oil called automatic transfer case oin

GM Full-Size Trucks 1980-1987 Repair Guide

Transfer Case - FLUID RECOMMENDATIONS
The type of lubricant used in the transfer case varies with model year and type of transfer case. Refer to the list below for the type that applies to your truck.

1980
Conventional transfer cases require SAE 80W or SAE 80W-90 GL-5 gear lubricant.
Full time systems use SAE 10W-30 or 10W-40 engine oil.
1981
Conventional transfer cases require DEXRON®II transmission fluid.
1982-85
All transfer cases require DEXRON®II transmission fluid.
1986-87
All transfer cases except the K30/35 series require DEXRON®II transmission fluid.

For fluid recommendations for the K30/35 transfer cases refer to the owner's manual. LEVEL CHECKS


Fig. Model 208 Transfer Case

Check the four wheel drive transfer case lubricant level every 4 months or 6,000 miles.

1. With the truck parked on a level surface and the parking brake firmly applied, remove the filler plug from the rear of the transfer case (behind the transmission). Be careful not to take out the drain plug at the bottom.
2. If lubricant trickles out, there is enough. If not, carefully insert a finger and check that the level is up to the edge of the hole, EXCEPT in full time four wheel drive cases should be 1 /2 in. below the hole.

Lubricant may be added, if necessary, with a funnel and tube, or a squeeze bulb.



DRAIN AND REFILL
Part Time Systems
No intervals are specified for changing transfer case lubricant, but it is a good idea for trucks that are worked hard or driven in deep water.

1. With the transfer case warmed up, park on a level surface and apply the parking brake.
2. Slide a pan of a least 6 pts. capacity under the case drain plug.
3. Remove the filler plug from the rear of the transfer case (behind the transmission). Remove the drain plug from the bottom.
4. Wipe the area clean and replace the drain plug.
5. Add lubricant with a suction gun or squeeze bulb. Conventional transfer cases require SAE 80W-90 GL-5 Gear Lubricant.
6. When the lubricant level is up to the bottom of the filler hole, replace the plug.

Full Time Four Wheel Drive
The full time system requires oil changes at regular intervals, according to the amount and type of work done by the unit. Trucks used for normal on-off road work should have the transfer case oil changed at 24,000 mile intervals. When used for heavy duty work, trailer towing, snowplowing, and the like, the interval should be halved to 12,000 miles. If the truck is exposed to extremely dusty or muddy conditions, the oil should be changed at 1,000 mile intervals.
The transfer case oil must be hot before changing. Drive the truck until the engine has reached normal operating temperature, and park on a level surface.

1. Slide a pan of at least 8 pts. capacity under the case drain plug.
2. Remove the filler plug.
3. Remove the lowest bolt from the front output shaft rear bearing retainer cover, and allow the lubricant to drain. Be careful; the oil will be hot. There may be a drain plug. If so, remove that instead.
4. Remove the six bolts on the left (driver's) side of the case which secure to P.T.O. (power take-off) cover. Remove this cover and allow the lubricant to drain out.
5. Remove the speedometer driven gear from the upper left rear corner of the case.
6. Use a suction gun to remove as much lubricant as possible from the case cover location and the speedometer gear location.
7. Install the speedometer driven gear, the P.T.O. cover, and the lowest bolt or drain plug.
8. Add approximately seven pints of oil through the filler plug opening. The proper oil to use is 10W-30 or 10W-40 engine oil.
9. Check the fluid level and add sufficient oil to raise the level to 1 /2 in. below the filler plug opening. Replace the plug, and wipe the surfaces of the case and skid plate to remove any excess oil. Drive the truck and check for leaks.

I really hope help ypou woth this (remember rated this help) Good luck.

there is really no need to change the transfer case oil other than not having anything else to do and it is very hard to get it out.. putting it in on the other hand .. you will have a recessed bolt in the top on the transfer case it looks like a 1/2 inch drive extension will go in.. back that out and put your finger down in the hole if you can't touch fluid it is low. go to local auto parts and ask for 90 weight transfer case oil.. if you tell them what type vehicle they will give you the right oil. probably need spout to get it in the hole.. secure nut back on and your done.. good luck ray

First of all yes it will damage the transfer case with no oil in it or even low oil. if it is just a seal then it is easy to replace, but if it means splitting the transfer case this is not a job for the diy, unless you have experience with transmissions or transfer cases. It should not be too expensive to have the work done by a profesional. Which also give you a warranty.