ok guys, the problem its that there is re-occuring water in the oil pan. :wtf: I have an oil catch can and that seems to get water in it fairly quickly. There is about an ounce or two per oil change. When I change the oil it runs poorly off and on for a few days and then gets it out of the system and runs smooth til the next oil change. I thought blown head gasket or cracked block, but there is no smoke or power loss. Motor is a B16 head and B20 block w/ stock internals. Let me know what you think.