Well this morning, started the truck and everything was great, a few minutes later my WIF light came on, well I didn't have time to drain and install the upgraded plug.

Well as I was driving with the light on, about 5 miles later the light went out. Should I be concered like I should be, or would it be ok to go to work then get home and drain and put the new plug in?

Usually I drain it if the light comes on and also when I start my oil changes. I put the gray bottle right now of Diesel Klein in at every fill up, this is the third time of the light coming on, but the first time of coming on then going off.

 

The WIF sensors are sometimes problematic because they get corroded however I wouldn't let it go any longer than necessary before I drained it. It should make a day.