air tabs

Any opinion by someone that has not used the product is worthless.

and of course it is equally true - or even more true - that OPINIONS of those who have used the product are equally worthless because of confirmation bias.

Here we have a product that is just crying out for some scientific testing to provide quantitative evidence that anyone can understand. Not hard to do and any high school science class could come up with some way of verifying the claims.

Recently spent a couple of days in an RV park and down the road was a huge pharmaceutical distribution centre with a couple of hundred prime movers and double that number of trailers in the yard. The company has 8 other similar centres. If that company could be convinced that putting $200 worth of plastic on each of those rigs would save 2% of fuel costs, they would all have air tabs fitted in an instant.