im blowin greyish blue smoke i know its oil but i dont know what it could b

 

if its greyish blue smoke you have an oil leak.. you would have to track the leak and go from there

 

when does the car smoke?

Smoking at startup = blown valve seals
Smoking on engine braking = worn valve guides
smoking on acceleration = worn piston rings

you could also have a PCV oil consumpstion issue. check your intake for oil.