Maybe its just my bad luck, but the other night i filled up for the first time with ulsd. the next day on the way to work i had a serious loss of power. when i got home i went ahead and changed my fuel filter because it was getting close to change time anyway. after i changed the filter it ran fine again. so this is just a heads up if you are filling up with ulsd for the first time you might want to have a spare fuel filte on hand just in case. like i said it could have just been my bad luck too.

 

I've read that the ULSD will break up any trash that's in your fuel system. Good idea to carry another filter around, like you said.