By Jim Fitch
Practicing Oil Analysis Magazine
We’re told machines should not be allowed to swallow air. But what if they do? What harm could be caused by this bubbly stuff anyway? Do we really have to make the machine burp? Will a few pats on the back do the trick? For many of you, air contamination is no laughing matter. Why? Because air contamination is a serious condition. There are five deadly problems associated with aerated oil. By aerated oil, I’m referring to entrained air, foam or both, which is the usual case.