Tractor Supply (Traveller) DEF

[phatboy64]

I found this one on Amazon, is it a good one? Says it needs to be calibrated with distilled wate, is that somthing that needs to be done each time?

 

[CdnHO]

I found this one on Amazon, is it a good one? Says it needs to be calibrated with distilled wate, is that somthing that needs to be done each time?

I have one. I calibrate it once a year. So far the readings I have done on DEF have been dead nuts on.

 

[phatboy64]

Thanks. I just ordered one…