Just a quick question around. I've seen on the four-wheeler magazine that the Wrangler gearbox in the newer Pentastar versions is a semi-sealed unit. It has a dip stick still, but unless the Jeep is commercially used, the gearbox is supposed to be virtually free of having to do any services (as in oil changes). As my car Jeep is coming closer to the magic 100,000 km mark I am wondering if I should include the gearbox oil in the next service cycle or get the transmission oil changed. Anyone here knows more?
i would be getting the auto done, they need servicing just as much as ever. they are basically the same as older units and you dont want the valve body etc getting restricted with muck or abrasion happening due to contaminates. By gearbox do you mean transfer? If so they are a bit more resistant to wear and tear but should be a fairly straight forward drain and refill scenario, though i have little experience with jeeps.