Built in oven, oven part of a range?
It still works perfectly, except for when the oven has been on for a bit. Then it starts squeaking, an intermittent (like once every 20-30 seconds) kind of squeak. It sounds like a metal on metal kind of squeak.
Oil canning is common, but that -usually- produces a bang like noise.
Metal expanding or contracting ( liner, racks, element ), cooling fan, clock, control probe moving ( if used ), hinges, door liner...
Anyone ever experienced this?
Lots of oil canning problems, lots of door hinges squeeking when the door is opened and closed once the oven is hot.