Has anyone bought a DEF refractometer to check new DEF before adding? I just purchased one from OTC on Amazon for about $65. I'll keep the test results, along with date of purchase and mfg. for DEF in case I experience a failure and dealer questions quality of fluid I've added.
Also, it might actually prevent an actual problem.
I bought one also. It works great. The dealer uses the same one. I am going to buy DEF at the local truck stop and fill my left over DEF jugs from Jeep. I will be testing the fluid before I put into vehicle and documenting the results.
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