need advice on vw golf 1.4 16v mk4
 

today i drove my car not far and all of a sudden oil was squirting out of where the dipstick is and also alot of compressed air when removing the oil cap, there was plenty of oil in but it had shot it all back out, last night the weather reached minus 14 and was thinking that the problem might be that .. could anyone else tell me a theory on what it could be? it has never done this before .. thanks!