There are standards for DEF regardless of the manufacturer. I have used what ever brand of DEF was available and cheapest when I need it for over 10 years. The key thing is to be sure it is somewhat fresh.
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Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
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