How Much Oil Do you Use?
dbpulvino at hotmail.com
Fri Jan 16 14:28:43 EST 2004
Worth taking into consideration, but have you looked under the hood to see
just what exactly your advice entails?
Oh, and going back to my numbers, the increased cost of 02 sensors would be
neglibable, given that the 02 sensor is a standard maintenance item anyways.
I assume i'd have to shorten the maintanance interval by 20%. Given that,
we're looking at 333k miles to recoup the cost, not the 275k where the
entire cost of 02 sensor replacement was included. I could still go with
the VW/Audi acceptable consumption number and be safe.
In as much as knocking is an end result of the littany of charges Brett
raises, I'm going to have to say that too is a nice theory not bearing out
in reality. I regularly run 87-octane and it is extremely rare that I hear
any pinging. The only pinging I've heard is in the summer, when we've had
90-degree days, and I'm in traffic with the AC going. At that point, I run
Same with emissions, I've not had any problems passing the state emission
standards in the cars current running condition. Passes with flying colors
even. Reference also "no residual on rear bumper" and "only time I see
smoke is on AM startup." On the last, I should add it's an occasionaly
And the cars is running standard ECU setup.
So we're long on justifiction, but short on cause, any takers here?
>One more I've heard of...excessive oil in the intake air (i.e. by leaking
>the turbo seals) can reduce the effective octane of your fuel...perhaps
>an issue with the Motronic and its (hopefully) fail-safe limp-home mode,
>years ago, one turbobrick (old style Volvo) owner reported losing an engine
>I'm with Brett here--not good to ignore esp if you're chipped.
>Mercer Island, WA
>linust at mindspring.com
> > -----Original Message-----
> > From: 200q20v-bounces at audifans.com
> > [mailto:200q20v-bounces at audifans.com] On Behalf Of Brett Dikeman
> > Sent: Friday, January 16, 2004 10:34 AM
> > To: Jonas Majauskas; Derek Pulvino
> > Cc: 200q20v at audifans.com
> > Subject: Re: How Much Oil Do you Use?
> > At 9:51 AM +0200 1/16/04, Jonas Majauskas wrote:
> > >On Thu, 15 Jan 2004, Derek Pulvino wrote:
> > >
> > >> The cost for the work would buy a lot of oil. Assuming
> > consumption
> > >> stays constant, and based on a conservative $500 cost from the
> > >> machine shop, at 2$ a quart, it would take oh, about 375k
> > miles to
> > >> break even. Any other beny's from head work? Maybe I'll
> > get a leak
> > >> down test to pinpoint culprits.
> > >
> > >Don't forget O2 (oxygen) sensor cost - AFAIK it does not like burned
> > >oil, so you may need to replace it much more frequently.
> > Don't forget deposit buildup on the exhaust valves, reduced effective
> > diameter of the exhaust, catalytic converter damage, and
> > carbonization in the combustion chamber(which leads to hot spots and
> > raised compression, which leads to higher octane requirements or
> > greater knocking danger). Not to mention pollution.
> > I'd say that the "ignore burning oil" advice is rather poor.
> > B
> > --
> > ----
> > "They that give up essential liberty to obtain temporary
> > safety deserve neither liberty nor safety." - Ben Franklin
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