Title: Bosch (4503) FGR7DQI Platinum IR Fusion Spark Plug
Review: Bosch (4503) FGR7DQI Platinum IR Fusion Spark Plug, Pack of 1I bought 4 of these for my 1999 Toyota Camry. My mileage went down from an average of 25 MPG to 22 MPG. The engine seems to run fine. I ran the plugs for about 3 full tanks of gas and consistently got 22 MPG. after about 1000 miles, I switched back to Denso Iridium plugs. Hope this review helps someone from make the same mistake I've made.
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