heat is no problem you strip, the humidity is the killer. Working in the cold, your butt crack showing, your hands are cold, wrench keeps falling in the slush, you slip on the ice, fall on your face, freezing wind blows in your nostrils, you take a deep breath your lungs freeze, your joints need massive infusions of WD-40,...makes you old fast, when your my age you'll be begging for FL. My skin is soft, smooth, and subtle, I change transmissions in shorts, iced tea in hand, all the girls whistle, sun is shinning, warm breeze, birds are chirping, think I'll buy another 05