On 3/31/2011 10:00 AM, 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.

Let's assume it does work.

20 gal tank @15.2 = 304 miles
20 gal tank @16.3 = 326 miles

So, 22 extra miles $2.97 + tax.

B12 contains acetone, which may play havoc with plastic parts. You can
Google it.


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.

Cleaning out your injectors or carb may very well improve mileage.

It appears to be a cleaner and that once every now and then is enough. YMMV.

Jeff

It may work for you, also.