On Thu, 31 Mar 2011 10:00:32 -0400, "Stormin Mormon"
wrote:

The mileage on my replacement Blazer is a bit low.
15 MPG, where the last Blazer ran about 18 MPG.

A friend reccomended Berryman's B-12 gas additive.
Says it's $2.97 at Walmart. Found it at Walmart. top
shelf, and this store had only two left, so it took a
while to find it. A couple days ago, I put in one can
of that B-12 fluid. I'd checked my mileage at 15.2 on
the last tank. This next fill up came up 16.3 MPG. I
don't think I changed my driving style, and the weather
is much the same. So, I'm figure that fluid did some
good.

It may work for you, also.

It definitely does.

I raised the mileage on my almost full 14 gallon gas tank by 2 mpg
after I added a two-gallon bottle of Berryman's B-12.