I've had my truck for a week now and today I noticed something disturbing. I started my truck and I noticed some smoke from the tail pipe. It was a nice spring day. About 64 degrees. I'm sure it was smoke, not steam. Later, I remote started it after it had been sitting for about 30 minutes. This time, it knocked for about 3 seconds and it also blew a small puff of blue smoke. The truck has about 430 miles on it. does anybody have any insight about what might cause this problem? it makes plenty of power. After it's been started, there's no smoke or noise. I'm moving in about 4 weeks and I really need my truck. Is it safe to drive like this? Also, I checked my oil and it appears to be over full. It's hard to tell how much, but the oil level is well above the line. The oil looks clean, not milky and I can't see any metal flakes. I'll take it to the dealer and let them take a look, but any help would be appreciated. Thanks.