Sooo, How much and why?
Will they last 100k miles?
Will they give us better mileage?
Power?
Etc. and please quantify the answers such as 5% or 2 mpg, not answers like Yes, you can experience better mileage. A tenth of a mile on a full tank is better mileage but negledgable at the same time.
Thanks and I'm curious and interested.
