[s-cars] Oil Pressure
trgreen at comcast.net
Thu Aug 2 12:24:05 EDT 2007
The later cars don't even have an oil pressure gage, Floyd, so I
much. IIRC, the spec is 1.8 bar minimum at idle, and the oil
light is operated by a 1.2 bar switch. Since the Corps generally
likes hot and
swampy places I assume you are in a relatively warm place, and are
oil grade appropriate to the temperature (chart in owners manual).
recommendation is a synthetic 15-50 or 15-40, and will affect the oil
readings. I wouldn't use the 0-30 or 5-30 grades that are designed
engines unless you get sent to Alaska this winter.
I can only wonder what grade oil was in the car if the oil gage
I wouldn't recommend the quick-stop places for fluid changes. They
use machines that "clean" and re-use the coolant. Audi recommends a
phosphate free, silicate free coolant, and there are so many
different types out
there for specific vehicles, I just use the Audi or Pentosin brand
Just don't mix different coolants even of the same brand. The more
German brands don't amount to much more expense if your system doesn't
leak and you keep a spare bottle available.
The all wheel drive has the front transmission-differential combined
separate rear differential that require different fluids.
If you can find the time to educate yourself on maintenance
you could probably have the base hobby shop do some of these things with
some specific directions from you, or DIY. There are some good
know before you put yourself at the mercy of a mechanic.
http://audifans.com/ (Knowledge Base and FAQ) (Marketplace for
http://www.sjmautotechnik.com/ ( has a great help section, sells
http://www.s-cars.org/postnuke/ (See the FAQ and downloads in site
You don't have to download anything to just read the pdf articles)
> Date: Tue, 31 Jul 2007 21:56:09 -0700
> From: "Floyd Noel" <floyd.noel at gmail.com>
> Subject: [s-cars] Oil Pressure
> To: s-car-list at audifans.com
> <b7342e130707312156x64f55a9avf09a5d1b2df949e1 at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
> Hello all,
> I've owned my 93 S4 for a couple of months now, and I just got my oil
> changed for the first time. Before the oil change, the oil pressure
> gauge never moved once the car was started. Now, it goes anywhere from
> 2 bar to 5 bar depending on engine speed. Which is correct? Should it
> move all the time, or not? TIA, I appreciate your help. I'm in the
> Marine Corps and at a time-consuming school right now, so I don't have
> much time for these things. Also, should I let any old oil changing
> place flush my radiator fluid, diff, etc? I'm pretty sure the previous
> owner hadn't done any of those in a while.
> Sgt Noel, USMC
More information about the S-CAR-List