Purchased a 6pack of Diesel Fuel Catalyst and have run a full bottle in the Ecodiesel and the Bluetec. Honestly never felt any performance improvement and no fuel economy improvement. I suspect the only evidence of improvement would be to crack open the engine and take a look, before and after..... which ain't happening.
I'm not sure what I will do with the remaining 4 bottles. It is a pain to measure a few Oz and keep an opened bottle in the vehicle somewhere for every fill. And the wife certainly isn't doing that with her BlueTec. I'm thinking I might do what someone posted above.... Just pour in a full bottle once every 3-4 months and call it a day. I'm actually more interested in cleaning the system, than I am seeking more performance.
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