Could be. Such wide ranging temps are not good for the motor's internals. Piston skirt design is such that they tend to stabilize across a certain range of temps, and those temps are the 'typical' engine operating temps of 180-220F or so. Hypereutectics help that, but it they still have their stable shape and size across a certain temp range. Below that temp range, they get loose, and when you barely exceed the hot end, the skirts' shape and dimensions distort totally out of whack. You can see this by very gradually heating a piston in an oven and checking the dimensions at various temps... I did this 30+ years ago and it was very educational!
