I've never seen on any pump where the cetane level is marked. I usually try to find it wherever it's the cheapest. An app like GasBuddy can help with that. Generally the best diesel will be at a station that does a lot of volume, like one off the interstate where truckers refuel. It will be freshest there vs. a tiny station in town that doesn't sell as much diesel.

The Murphy Express on Lee Hwy at 153 (in front of T-Mobile) usually has it the cheapest. Right now it's $3.01!

You can use a diesel fuel supplement to boost cetane and help keep your pump and injectors clean. Power Service makes a couple. In the wintertime, use the white bottle because it also has an anti-geling agent. In the summer, get the silver bottle which claims to boost your MPG but I have not noticed a significant improvement.

On an older car like mine, running additive on every tank probably helps more to prolong the life of the pump. In a newer car like yours, every other tank is probably sufficient but if you're driving a lot of miles every tank wouldn't hurt.

Jettaman
Minimum requirements for fuel stations on #2 diesel are 40 cetane rating. That will be derived from the r+m/2 method.     

I personally haven't seen #1 diesel in Chattanooga. But I don't go searching often either.

I would use an additive like power services cetane booster it will move #2 diesel to #1 rating.  If you had a little older diesel I would suggest for cost efficiency to buy a case of the cheapest atf from the parts store and put 1qt in per tank.  But you have a dpf and this will cause it to clog faster. 

If by chance you decide to delete your dpf and want/need a tune for that come see me we are a Malone tuning software dealer.


Sal

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