Michael Fredriksz, Lake Forest, CA. 92630 To Whom It May Concern: This letter is in regards to TRI-MAXX fuel system cleaner service. Recently my 1988 Ford Van began making a pinging noise. The Van has approximately 115,000 miles on it. I took the Van to the local Ford dealership and they recommended a valve job at a cost of $1500.00, but they then said it is probably better to just buy a new one. This cost prompted me to buy a new vehicle. After the new purchase, I had my Van serviced with TRI-MAXX Fuel System cleaner chemicals. The results were very impressive, no more pinging noise. Also as you can see, by the emissions figures below my vehicle would not have passed a California State Emissions (SMOG) Test. To pass hydrocarbons emissions would have to be below 100 PPM (Parts Per Million) & mine were over both at Idle, 440 PPM and at Cruise 127 PPM. Immediately after you did the TRI-MAXX Fuel service to the Van the reading dropped from 440 PPM to 41 PPM at Idle and from 127 PPM to 20 PPM at Cruise. So I could now pass the Emissions or Smog Test. When I had it tested by the State of California on 09/11/06, the readings were still as low as the accompanying Smog Test copy shows Thank you very much. Sincerely, Mike Fredriksz Copyright 2000-2010, H.D.I. Management Inc. Nevada, USA all rights reserved, All logos, Trademarks, & Copyrights are property of their respective owners.