Could be the fuel, as we did have a problem with supermarket fuel a few years back if you can recall ? , maybe your fuel filter needs changing if you ran low before you filled up, then all the crap is now in the filter.
__________________ VELVET BLUE UK INDIVIDUAL , IM THE LAST
UNITED WE STAND DIVIDED WE FALL
I stepped in a plate of Pasta the other day - now I have to worry about my Carbonara footprint!