View single post by Judson Manning
 Posted: 06-15-2005 01:36 pm
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Judson Manning



Joined: 03-14-2005
Location: Atlanta, Georgia USA
Posts: 406
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 A lot of sevice manuals will advise you to remove the oil pan, however, that's not enough for the JH because our oil cooler and cam towers are sludge collectors.

One option is to tear apart the engine and clean it by hand....Instead, I prefer another method.  It basically consists of changing the oil several times over the course of a few hours.

Depening on my mood and the state of the oil, I'll buy a case of cheap 5W20 and a quart or two of 'motor flush' from the auto part store.  I drain the old oil then refill it w/ motor flush and the 5W20.  Idle it for about 5-10min (don't ever drive with this stuff in the crankcase) and change it again. 

The process of draining, filling and idling the engine continues until you finally open the drainplug and somewhat 'normal/clean' looking oil comes out.  It could take you one application, or it could take you as many as 3-5 complete oil changes before that crud gets out of your engine.