How do I measure the oil level in my compressor using the dipsitck? Support October 03, 2020 18:19 All of our dipsticks have a distinct notch or marking at thebottom of the dipstick to mark at the appropriateoil range. The oil level must be within the notched area. Related articles My compressor and hoses fill with water that eventually gets into my air tools. Is there something wrong with my compressor? Comments 0 comments Please sign in to leave a comment.