Thanks for the links. Interesting reading. We use 80% + Chevron and the rest
Shell. They indicated that Shell was evil. I've never had (or heard of) a
bad Shell issue before. We had switched from Premium to Midgrade at their
requests due to a starting issue. Valve scoring and carbon deposits. At 23k,
it doesn't seem to make sense. The service dept said it was definately a
fuel issue, not a problem with the car. (Tho they warranteed the repair
$2400 @ warranty cost) Obviously, I wouldn't want to pay this (or worse) out
of our pocket down the road. If all I need to do to prevent further issues
is to by only Chevron as was suggested, then so be it. Combined with the
starting issue we had I wonder if there was a connection or if the fuel was
the cause. . Tho, I don't have any reason to distrust the dealer. It would
be nice to understand this issue. I should have them send me a copy of they
service bulletin. I also read on Brickboard that a person had an 05, same
mileage etc that the dealer told them the wrong valves were installed at the
factory. The last Volvo ran 300k with no internal engine repair.Weird at
This is an excerpt from the gm site.
Where can TOP TIER Detergent Gasoline be purchased?
The following marketers have met the TOP TIER Detergent Gasoline standards
and are offering this product in all octane grades and in all their
respective marketing areas:
c.. ConocoPhillips (Conoco, Phillips 66, and 76 brands)
e.. Entec Stations
f.. MFA Oil Company (Break Time stores)
g.. Kwik Trip, Inc. (Kwik Trip / Kwik Star)
h.. The Somerset Refinery, Inc. (Somerset Oil)
"Steve" <email@example.com> wrote in message
> In 1986 or so BMW had a recall for the same thing. The fix was to remove
> the intake manifold and shoot walnut shells under high pressure into the
> intake side of the head.
> The shells were soft enough that they would not damage the cylinders, or
> There was also Techron added to the tank and the owner was instructed to
> the tank almost to empty, then pour the provided additional can of techron
> in before refilling the car next time.
> I think that following sites have some good information to try to avoid
> issues like this:
> "encat" <firstname.lastname@example.org> wrote in message
>> Just picked our Cross Country up from the shop where they replaced a pile
>> valves. Our concern was the check engine light. Apparently there is a
>> bulletin on this - carbon build up, which seems strange as we put good
>> in it. It's an 04 with under 25k on the clock. Anyone else?