As far as I understand it DEF has a chemical reaction with NOx in the exhaust causing it to break down into into other less harmful elements and compounds. This happens under very specific circumstances and not only does it require a high temperature... But I believe it may also generate some heat as a result of the chemical reaction occurring... But I'm not a chemist, and I havent studied chemistry in a very long time. But that is the basics of it as I understand it.
Can You Bypass Def?
Discussion in 'Experienced Truckers' Advice' started by BigDog Trucker, May 8, 2020.
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Roberts450 Thanks this.
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Cattleman84 Thanks this.
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The fluid gets sprayed into the line further downstream.BigDog Trucker Thanks this. -
The DEF quality sensor can also cause issues, the one on my Mack acts up from time to time, we only get DEF from a 300 gal tank in our yard, every so often I get a "Poor Quality Def" detected message, and when it happens, it triggers a parked regen. Based on the headaches I see my boss/mechanic have with these DEF tanks, I would not want to do anything that causes more.
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The only DEF My truck has is a Def Lepard Cd in the stereo. It never runs out its on continuous loop play.
MGE Dawn, singlescrewshaker, Opendeckin and 3 others Thank this. -
Anyway, Thanks for the info!!!Cattleman84 and Roberts450 Thank this. -
Mechanic told me years ago the best way to have def problems is keep running it low.. I quit doing that and knock on wood the issues went away.
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singlescrewshaker Thanks this.
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