Light haze at idle.normal?

[zrain25]

I have a 99 f350 with 200k starts up in the dead of winter with no block heater. I get 15 mpg with 33s mud tires. I get a little puff at start up but nothing after that split second. But it dose have a light haze at ideal no matter what temp. I can only see the haze at a certain angle during the day and at night if I put a flash light on the exhaust

Truck runs mint so idk if its normal

I can't see any smoke in the mirror while normal take off ?? Is it normal for 7.3 do have a light haze


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