Title: My mileage decreased significantly!
Review: I put this filter into my '04 Honda Civic Hybrid expecting a lot and was I disappointed! My mileage went from 51-53mpg to 46mpg. Totally unacceptable. I ended up returning the filter. I love "greener" products that are reusable, but it isn't worth the mpg loss for my vehicle. I highly recommend NOT getting this if you are trying it in a hybrid. I think it has to do with the sensitivity of the engine since it's so fine-tuned and small. Stick with a quality paper filter and keep your mileage.
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