After inspecting the recently acquired 89 XJ, it has been deemed worthwhile to build up with minimal rust. The first set will be new fluids, all around.
Do the XJ’s take any special Coolant like the new TJ’s do? How can you make sure the closed system is full of antifreeze? Although it seems to stay right around 200 degrees, the plan is to swap in the newer style radiator/pressure cap set up but for the test runs down the road, the stock setup should suffice.
At 216,000 on the 4.0, is there any special kind of oil that should be run in it? I know that “High Mileage” oil reads 75,000 miles. Heck they are just getting broke in by then!
The transmission still shifts smooth (in comfort mode) and firm (in power mode). However doubting the fluid has been replaced in +60,000 miles it simply seems like a good idea. I tried searching but became extremely confused in what kind of fluid to use the Auto. How would one do a flush at home? I read something vaguely stating that by disconnecting a cooler line, with the engine running, while dumping fluid in you can flush out the system fairly well. What cooler line do you disconnect? Any special tools need? The filter/screen would be replaced after most of the fluid returns to red when flushing the system. How much fluid would need to be purchased for this process?
The t-case is also a confusion area. It has full/part time 4x4. What fluid should be used in it and how much is need?
Since the front axle is going to be saved the gear oil need to be dumped and replaced. I assume it will take about 40oz of oil to fill. What kind of oil should be used in the front axle, synthetic?
The rear end is going to be replaced with an 8.25 once on with 3.55 gears can be found. What oil goes in there, synthetic? Partially off topic, but what Shipping company would you suggest using to ship an 8.25 across the country?