On Mar 31, 11:28*am, CaveLamb wrote:
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.

My Blazer (200 4.3L V6) used to get right at 20 mpg.
Then it suddenly only did 18.

A few weeks ago, cursing through Oklahoma, I stopped
at Jet Petroleum to refuel - NO ALCOHOL.

For that one tank it was back up to 20 mpg.

But I guess YMMV?

--

Richard Lamb

There is no question the mileage is lower when ethanol is mixed in.

Ethanol has lower btu/gal, and the engine must also enrichen the
mixture (add more fuel for a given amount of air) when alcohol is
added.

To run E10 I had to rejet my non-fuel-injection motorcycle.

I believe fuel labeled E10 may contain less than but no more than 10%
ethanol.


Dave