Join Date: Aug 2010
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You must be excited! I picked up my leftover stock 2012 CCSB FX4 about a month ago, and have been loving life since. Have put 2500 miles on mine since I picked it up with zero problems.
Just a few things different with diesel vs. gas to be aware of, all of which you can search here for more details.
1. Fuel quality is IMPORTANT. Buy from a reputable major brand station that moves a lot of diesel fuel. It's worth it to drive a few extra miles, or pay a few more cents per gallon to get fresh, dry (water-free) diesel.
2. Change your fuel filters on schedule.
3. Empty 4-6 ounces of fuel from the water separator drain once a month into a CLEAR diesel-resistant container (I use a glass mason jar). You can easily see any water that might have drained out.
Short drives as Jason mentioned are bad. It will lead to soot build up in the DPF which results in lots of regeneration cycles (regens) as a result, which hurt fuel economy quite a bit and may eventually necessitate a replacement DPF. These trucks are made to be driven a lot.