I was going to post anyway, but seeing a couple of the low sulfur fuel
threads got me thinking that it seems to have been accompanied with a
different "sound" to the engine - more of a "chugging" sound than what I
have been used to - the knocking sound of the explosion in the cylinders.

The car seems to be a tad rougher, but not much, and the pickup seems as
good.  Starting in cold weather perhaps a bit more difficult, but all in
all no super big changes.

The change in sound I just noticed over the last couple of weeks, as I
finally filled up with the new fuel.

Any similar experiences?

Thanks

tweaks