I'm pretty sure that I have a blow headgasket. If I fill the radiator up to the top (I know that's overfull) and start the tractor I can see bubbles comming up from wherever? Combustion gas probably? I am also loosing coolant, and it's not leaking anywhere. The oil looks like it's milky and probably has coolant in it. So I ordered a headgasket and my question is how bad is it to change it? Any advice? It looks like it will be pretty easy I just wanted someone who has done it to let me know how it went. lol Also I bought a felpro gasket from advanced. Good / bad? Thanks for the info in advance.