Bosch 4501 Platinum IR Fusion Spark Plug

[daf62757]

Originally Posted by BailOut

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.

I'm afraid I don't keep mileage logs. I just go by the last tank and my recollection of the tank before that.

As for the plugs not being worth the cost, you might be right. The plugs do provide better power....so if that was the only difference, it would be worth it. I would love it if there were better gas mileage.