So my 05 neon sxt is loosing coolant not sure where I've put a new radiator cap on put a new t stat in and done a compression check and I'm still loosing water I need some ideas it has almost 100k on it thanks

 

If it's not leaking from a hose or the radiator, check your transmission fluid ASAP before driving the car again. If the transmission fluid looks like a milkshake, you've got a problem.

 

tranny fuild still looks pretty red and its not leaking on the ground the water pump is working fine im kinda stumped

 

Does you engine oil look diluted at all? Have you stuck a large piece of cardboard under the car overnight to see if there is any leaking anywhere? I've spotted leaks on cardboard where I couldn't see anything on pavement.

 

the heater core could be leaking but you would probably notice a wet floor

 

floor is dry and the engine oil looks good and isnt raising

 

also i park in a garage so seeing leaks is pretty easy

 

Seems like all my water is being pushed into the boost bottle but not returning to the radiator any ideas

 

Bad radiator cap.

 

I just replaced it a week ago