Bilstein used to make, and may still make, a flush machine that works better than anything else I've seen. It heats up solvent and pumps it into the engine through the oil filter adaptor. By pumping it in through the oil filter adaptor it both pressure cleans the top end and back flushes the pump and pickup to get sludge out of places you can't reach by hand without taking the engine apart. As it is pumping the solvent in it sucks it out through the drain plug, filters it and goes again.
I always considered using the Bilstein a last resort because it flushes all of the oil out of the engine and basically leaves it dry at the next startup. This never caused any problems, but it made me nervous. I was able to save a few engines with it, but there were a lot of others that were too far gone. It may be worth a shot if you can find one. I'm sure there are other machines out there that do the same thing, but the Bilstein is the one I'm familiar with.
2012 Silver Sport S, Silver, 6 speed, soft top, 3.73s, LSD, PCG, Infiniti, deep tint windows, Pro Comp 1028 wheels, 33" Duratracs, Smittybilt bumpers and steps, KC fog lights, Mopar slush mats and fuel door.
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