My name is Ellie Mongin my husband is Bill Mongin the Power Up Distributor for M.C.S. Inc. We purchased a 1991 Pontiac Grand Prix form our local GM dealer in Coleman. The cars odometer registered 113,048 miles of use. The engine had some noise when we purchased it. Bill & I documented the oil pressure and miles per gallon before the use of Power Up NNL690G. As soon as Bill applied the Power Up to my car about 50% of my engine noise disappeared and the following results listed below were experienced.