shttp://www.wranglerforum.com/images/smilies/doh.gifo the title of my jeep is work in progress that aint no lie. I have a 95 yj with 4.0 I6. My buddy and I recently pulled the head to do some upkeep on the engine so i can get all i can out of it. The PO must have not done any regular oil changes and used crappy oil because the sludge is unbeleivable! so the head is cleaned and new valve job done..... what should I do? ive done a bunch of research on additives and there are mixed reviews...right now our plan of action is to clean sludge anywhere else we see it, pull the oil pan clean it, oil change/filter change, engine flush several times with continued oil changes filter changes. Any body out there whos dealt with this before help!!! I cant put tons of cash into this jeep but i want to get it right.