Def is about 70% water. If you keep topping off at say 80% def load. Then over time enough water will evaporate off in the near consistant def load to start to cause issues especially in hot dry enviroments. It takes a long time, say weeks or even months maybe more if your tank is better sealed then mine for example but i saw it begin to happen when i tested my own def, when i didnt let it burn enough off for too long. So its just cheap insurance to burn off enough to keep the ballence more in line.
Where do you buy your DEF? Preferred brand?
Discussion in 'Trucks [ Eighteen Wheelers ]' started by Deezl Smoke, Dec 22, 2021.
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I just get my DEF from the guy in the next parking spot who parks after me and runs his reefer all night. I figure we're even.
Deezl Smoke, little cat 500 and jsnell Thank this. -
I have never found DEF with a high concentration. It’s always diluted or low….always.
jsnell Thanks this. -
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So would a new sensor system have issues with a bit over concentration vs. dilution? -
The acceptance threshold is about plus or minus 2% from the correct level of 32.5%. Outside of that range and your gonna have issues.
For the mathematically challenged that’s around 30.5 -35% range.Deezl Smoke Thanks this.
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