Hey guys, my bro has a bit of a problem. Hes seeing coolant in his oil. (green bubbles in it) He has the 2.5l 4cl engine in that. Yesterday it was overheating cause his thermostat went out. He said it ran a little hotter after the new thermostat, but it stopped overheating. So, any ideas? Blown head gasket maybe? If it is, how hard is it to change if that is it? He does have a Chilton manual, but hes doesn't have any experience with that kinda stuff. Thanks for any info!