workinNV Posted February 7, 2022 Hey everybody, I'm new here and looking for some advice. I have 2019 NV3500 with the 5.6. It's a company truck and when it does get driven, it can be up to 2,000 miles in a week. However, it's pretty low mileage considering at 62k. I just took it in for it's normal service today and spoke with a service advisor, who had not heard of an issue like this yet. I understand the basics, colder day, on a cold start, creates a large amount of condensation from the water vapor from the exhaust. What I'm seeing doesn't seem normal. Leaving my house and hitting highway speeds, it'll clear up in about a 1/4 mile. In town it seems to last a lot longer, up to 5 mins. It's almost like a white smokescreen from the Batmobile. My wife was behind me in a 2019 Yukon, and the whole truck disappeared in the cloud. I couldn't see her in my mirror at all. The service advisor was concerned about maybe a hairline crack in the head gasket, which was my first concern. Has anyone else run into this? I mean it's a fricken cloud. Thanks in advance. Quote Share this post Link to post Share on other sites
crusty Posted February 8, 2022 Very normal. If you are not experienced with cold weather it can look odd. But it is normal and signs of a good properly running engine. It is only a problem if the haze lingers. Oil or coolant will make a haze that just hangs in the air, not going away. Straight water vapor, just like your breath when you exhale or watching the steam on a cup of coffee. Large engines, moving a lot of air, leave a lot of steam (technically condensate) in the air. Quote Share this post Link to post Share on other sites
