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Message: <blockquote data-quote="Lee12609" data-source="post: 760943" data-attributes="member: 12415">Re: So What did I break this time?not to spoil your party but i seriously doubt you'll do a 4v swap anytime soon. you might have found a teksid but you need a ton more stuff, and plenty of time. i've seen you post multiple times that money is an issue for you, for that reason i'd look into actually fixing your current engine.to answer your question though, first you need to do a pressure test on the cooling system, or pay a shop to, but it sounds like your car is boiling over instead of leaking. if its boiling over but the gauge isnt reading hot its pretty much guaranteed you have a stuck thermostat, and you need to change it before driving the car seeing as how you cant rely on the gauge.  the oily substance is probably coolant that was boiled out of the overflow tank and blown back from driving and the fan kicking on. fix the overheating issue then look into oil leaks. i'd also recommend an oil change, anytime a motor is allowed to get that hot alot of things are put under extreme pressure, head gaskets have a high rate of failure when the block is overheated, but you'd be steaming out the exhaust and overheating quickly. the oil gets very thin and looses its ability to lubricate when its heated, so i consider an oil change a must after a boil over.....if reliability is what you are looking for i'd stick with the 2v, maybe swap in a newer PI longblock if you think yours is tired, although i doubt it is even barely broken in....</blockquote>