So I replaced my motor and after I installed it I left it run so I could make sure it didn't over heat and once it reached the operating temp I left it run a lil while longer . Didn't over heat so I changed the oil after and coolent is mixed in my oil so . I did the same thing again ran the car and changed the oil again same thing .. the only thing is the car dosnt smoke but after the test drive to get gas car ran for awhile and started to over heat .. so would that mean my head gasket is blown ? Sorry if I missed spelledd anything typing on my phone at work real quick ..

 

Headgasket. Cracked block. Could be a lot of things.

 

ima say replace the headgasket

but as slow swap said it could be a nuber of things

 

Yes a number of things could be wrong Id say haedgasket but thats what we thought was wrong with mine.......lol

 

Haven't beat this motor just installed it to day. It didn't smoke when I drove it . How hard is tit to do a head gasket ? Car hauled ass on 10psi though

 

 

If it didn't smoke, then I'd lean more towards a cracked block since antifreeze is not getting into the cylinder.