Well I would rather not end up on the side of the road with a blown head gasket. Its not a few degrees, its the irratic behavior. I live in Texas and it gets above 100 degrees during the summer. I'm not here to make a 1.4l engine fast, im here to make it dependable.To be completely honest, I think you're looking for a problem that doesn't really exist. What is your worry with a few degrees higher?