I believe you are referring to Prolong, a snake oil additive that was
popular some years back before the Federal Trade Commission stepped in and
demanded proof, just like they did to the Splitfire sparkplugs.

Bill Grannis
service manager



Here's what Bill is talking about:

http://www.ftc.gov/opa/1999/09/prolong.htm

But you CAN still buy the stuff:

http://www.prolongsales.com/?gclid=C...FQP4PgodaihaCw