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Hey! I am test driving for the afternoon a 2014 cooper S countryman w/ 66k miles, upon arriving home with it I removed the engine cover and found what I think is a mix of coolant with oil on one of the middle bolt holes of the engine cover..... it was bubbling while the coolant reservoir was slowly filling back 😏😏. The coolant reservoir was clean (no cheese just antifreeze / I can tell however that it will need a coolant flush) and there is no white smoke coming out... drives perfectly fine, no overheating issues nor instrument panel lights. I cleaned the bolt hole, tightened said bolt, went for another long spin at 20-60mph for about 15 mins, got
home and there is nothing in said bolt hole any more, no liquid, no bubbling, no weird sounds, etc. Has anybody have had this experience or something similar? Any input or advice? Thanx so much in advance!