Hello I have some questions about four wheel drive. This is my first jeep and first vehicle that has four wheel drive. I used to drive a Mazda 2. So ahead of time please forgive my ignorance. So my questions are is it okay to leave the 4wd H engaged when I turn my jeep off? I am at the beach and as soon as I get on pavement I will shift back in to 2wd. Another question I have is that's a little off subject is the over all speed I drive while in 2wd. Obviously the jeep isn't meant for speed but I was curious if it will damage the jeep to go 80 on the highway. I have a long drive home.