We also purchased the OTC. Only thing I have not found is a bad batch yet even though Cummins tells you to check it. 100% percent of the time its been a Cummins or DEF head problem.
Thanks for the responses, much appreciated! We have been using FVP DEF from FMP and the last couple of pallets have had the jugs covered in dried DEF as well as the seals under the caps coming off a little "too" easy. Just figured we should start testing.
I didn't know we were supposed to test DEF... Will the refractometer I use for coolant and battery acid work for DEF as well or is there something special about it?
Yes, it is suggested that you periodically test DEF. You need to have a refractometer that is capable of testing DEF, not all of them do.
quote:Originally posted by Dvorak
I didn't know we were supposed to test DEF... Will the refractometer I use for coolant and battery acid work for DEF as well or is there something special about it?
DEF testing
Posted - 02/27/2020 : 08:50:28 AM
