Coolant is being pushed into my resevior whenever I get on it. I also realized that coolant is getting to my oil but oil isnt getting into my coolant. I checked compression and its 170 across the board (9:1 comp). I know this is a headgasket issue and im going to replace it with some new studs on thursday but my question is how is the compression good and this is happening??? Am I missing something here??