08 KK Liberty COMMAND-TRAC Transfer Case capacity
I'm glad this post is still going. Eventually we will get to the root of the confusion. To make an assumption at this point, it sounds like 2 quarts are put in at the factory, but the capacity is 3.8 quarts. Meaning, if you pump in AT+4 until it drips back out of the fill hole, you will pump-in about 3.8 quarts.
This sounds like a "money-saving" measure at the factory. It NEEDS at least 2-quarts for normal wear-and-tear to not wear-out the transfer case during the factory warranty period. But, the exact engineering placement of the fill hole means it will actually hold 3.8 quarts.
To make another analogy, if Iím not mistaken, when an engine in a truck holds 6-quarts of oil and the same engine in a car holds 5-quarts, they intentionally put in a bigger oil pan capacity to allow the oil to cool-off a little longer in the pan before it is pumped back into the engine again. That said, our transfer cases should run a lot cooler if we all fill our transfer cases to the bottom of the fill hole. This also means that the "wear" contaminants that are in your AT+4 are more concentrated if you only have 2-quarts of AT+4 in your transfer case. Does this mean our transfer case will run cleaner, cooler and wear-out slower if you have 3.8 quarts in there?
Please, I hope other Liberty owners will continue to contribute to this experiment. Whenever you change your transfer case oil, measure the AT+4 that comes out, add the new AT+4 until it just begins to come out the fill hole, and make a post of your findings to this thread.
Please, are there any jeep service technicians that would like to perform this controlled experiment? Please comment too!
Thanks in advance,
15 Jeep GCL; 11 Jeep CL; 67 Jeep M725 Ambulance;
04 Ram 2500 CTD; 46 Willys CJ2A