Hi, Terry -
Thanks for the warning tips on the instrument cluster. Certainly don't want to ruin the dash top which is still as new. Rheostat is fine.
Going to rig up an "L" shaped tool to unclip the cluster and will be very very careul.
As for the tank, it was recently replaced (at the dealer) - the debris I'm concerned about is actually algae sludge buildup I've seen mentioned at various postings, although RedLine is supposed to help. Maybe this algae problem is prevalent only in certain parts of the country ?
81 300SD 193,000 miles.