Is there such a thing as good fuel or bad fuel?

[Avinash Chopde <avinash@acm.org>]

[I searched thru some of the archives, but did not any info
on this topic, so am sending this e-mail.]

After replacing too many fuel pumps on my old VW and now Audi,
I'm curious --- is there any prevention possible for the
fuel-pump failures on these German cars????

One mechanic told me -- avoid Mobil high-octane fuels.
(According to him, Mobil makes high-octane differently from
others, and that can cause pumps to fail.)

Another told me -- all gas is ok, but don't let the tank fall
below 1/4 full.

I now have a new Bosch pump in my fuel tank (last one failed
within two years), am wondering how long this will last...

So, is there any net-wisdom on this topic? Are the statements
above by the mechanics true, or is it just meaningless???

-- 
Avinash Chopde  |  avinash@acm.org  |  http://www.paranoia.com/~avinash/