Curious to note if anyone else has the same problem and/or should I get it looked at now or at the next oil change.
When the AC is on, my 2004 Mountaineer V8 will squeek about once every
1 - 2 minutes. Another way to describe it is as a short whistle, like a pop-off valve releasing. Seems also to only happen while the vhecile is in gear and moving making it very hard to pinpoint by eyeballing.
TR Neafie