Bosch 4501 Platinum IR Fusion Spark Plug - Toyota Yaris Forums

BailOut · 03-06-2009, 01:31 PM

Please provide mileage logs for at least 3 tanks before you changed the plugs out, and for at least 3 tanks after the changeover. You may need to track for a longer time to find the true difference, if there is indeed a difference. Even then we'll need to weigh the cost of the plugs and their lifespan versus any fuel economy gains.

I participated in a manufacturer's test for better MPG with the Pulstar plugs and they made not one iota of difference over the stock plugs despite costing 8x more, so I am skeptical.

03-06-2009, 01:31 PM	#10
BailOut Steals terrorist's lunch View User's Garage Drives: 2007 Yaris Liftback Join Date: Mar 2007 Location: Reno, Nevada, USA Posts: 1,299	Please provide mileage logs for at least 3 tanks before you changed the plugs out, and for at least 3 tanks after the changeover. You may need to track for a longer time to find the true difference, if there is indeed a difference. Even then we'll need to weigh the cost of the plugs and their lifespan versus any fuel economy gains. I participated in a manufacturer's test for better MPG with the Pulstar plugs and they made not one iota of difference over the stock plugs despite costing 8x more, so I am skeptical. __________________ - Brian Share the Road I often carry 2 carpool passengers and mountain bikes or snowboards/skis over a 4,500 foot elevation difference. Click the graphic above to see my detailed mileage logs.

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