https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://m.youtube.com/watch%3Fv%3DwcDe2QYN8As&ved=2ahUKEwivsOCPgLOJAxWncaQEHQ02BvEQo7QBegQIFhAF&usg=AOvVaw1egZiBDo00eIxeor7uuM9U
Something like this, it's the least you can spend to verify the coolant and gasses that may be present. 👍