bottle of the chevron stuff plus do you ever floor it? I discovered after many months of driving like a grandpa if I'd mash the gas for an extended time there would be a large soot cloud. My rationing is those cats need to be unclogged. Good luck.
Thanks Sid. I saw this pop up on the FB facebook page but I couldn't find any other info anywhere. Another reason why I recommend to anyone to pony up and become premium members on this site.