the colder the air going into an internal combustion engine the better.
The engine is happiest when two conditions are met:
1. It is fully warmed up.
2. The air going into the intake is very cold.
The colder the air, the more dense it is, and the higher your compression ratio will be. I can notice a BIG difference when I compare my Connie's performance on a 105 degree day to what she can do when it gets near freezing.
So, the really cold air won't hurt it. And think about it- when you first start it in the morning, it's just that cold anyhow with no heat to draw on, so what difference would it make?
Randy
