[Biturbos4] Mervel Mystery Oil

[Charles Wurts]

I can't help it but to ask, following your own suggestion, if in 
retrospect you think that your S4 would have been a better long haul 
car than your actions suggest?  I ask because I have a an 01 S4 avant 6 
speed that I bought to drive until the wheels fell off.  I have 
maintained it with 5K oil changes and Mobile one 0-40 for the most 
part.  I have also kept it stock, also for the long haul.  I have the 
95 S6 avant that I deeply regret selling with 100k miles rattling 
around in the back of my head; I really should have gone long with that 
one.  Things are tight in my world right now and I am debating selling 
the the '01 S4 with a new car warranty in mind for family.  I am 
interested in your actions and comments given your exposure, off list 
of course, unless you chose to post this note and your response.

A long time quattro junky

72 100 LS (gone)
86 4kcsq (gone)
88 5kcsq (gone)
90 V8 slushbox (still mine and going at 165k)
95 S6 Avant (gone)
01 S4 Avant Manual  (love it but can I afford it?)

Charlie

On Dec 10, 2004, at 2:05 AM, Keman wrote:

> Let me be the first to say not to even put it into the trunk in the bag
> from the store which you purchased it from.
>
> I've certainly worked on cars enough over the years to be familiar with
> crazy attempts to get more detergents into oil, ie: using ATF instead 
> of
> oil to break down all the varnish etc (Done that!) ... but at this 
> point
> what I've seen from the dudes at Mobil or Redline or Amsoil, there is 
> no
> need and at best it might cause problems.
>
> Just my .02 ... if you want to spend more money on oil, use redline.
>
> As far as the viscosity... since I know this topic will come up again,
>
> 5W-30 in the winter, 10W-30 in the summer .. pure synthetic.
>
> 15W-50 under very hard use / high heat conditions in any season.
>
> I know Audi recommends 0W-30, I know some people put in 0W-40 and 
> swear by
> it. Myself, I've determined that is only for mileage. Not longevity.
>
> Over the last 6 years the engine bearing tolorances have not changed 
> one
> bit, yet a late 90's 1.8T owners manual says in big bolt print "Use 
> 5W-30
> if all other grades are not available and do not drive the engine at 
> high
> speeds on this oil" ... they recommend 15W-50 for all temps down to 0
> degrees F. Flip forward a couple of years and poof.. wow.. what's this.
> 0W-30. No warning about using 5W-30 at all.
>
> I've had the turbos apart, they don't care what oil you put into them 
> so
> long as the pressure isn't too high. There aren't any mysteriously
> microscopic oil passageways that 10W-30 would starve. Pretty much 
> anything
> you feed them turns into white froth that spills down back into the oil
> pan that resembles coffee with a bit too much cream. KKK turbos don't 
> even
> want a lot of pressure, if you push too much you just push it past the 
> oil
> seals. How turbos seal the oil is a fascinating piece of science .. the
> first step is actually centrepetal force. The oil is 'flung' off the 
> axle
> into a cavity that has baffles, and from there gravity drains it away. 
> Air
> must be present in these baffles, so if a turbo drain line is ever 
> raised
> above the turbo they'll fill up and the turbo will gush oil out into 
> the
> exhaust.
>
> Don't get me wrong, the 2.7T's oiling system is incredibly complicated,
> with check valves to hold oil, pressure valves to keep oil going to the
> main bearings if pressure falls below a certain point .. more pressure
> valves to direct oil to the undersides of the pistons when oil pressure
> goes above a certain point, it's truely a masterpiece to behold. 
> Whatever
> grade you run, I would say the most important thing is that you run
> /synthetic/ and change it out at 5k miles tops.
>
> I did this since the first 1000 miles, and 105F degree track abuse and
> TONS of street abuse in california bay area heat.. (I floor it away 
> from
> every light, I speed like a maniac) at 80k miles the turbo wheels had
> perfect shaft side play and at 96k miles it still didn't burn a drop of
> oil between changes. With my luck of ditching my S4 because I needed a
> warranty... that car will probably run forever.
>
> At least I'm back into the turbo world. Tomorrow I pick up a 1988 Ford
> Thunderbird Turbo Coupe 5 speed manual. 78k miles on the clock, it's my
> new beater toy. Unfortunately I can't find any S4's or even 1.8T's for
> $1200 but if anyone wants to sell me theirs for that price, be sure to 
> let
> me know. :)
>
> - Keman
>
>
>> Hi all.  I have been lurking here for three years.  In that time I do 
>> not
>> recall any discussion of the wisdom of putting Marvel Mystery oil in 
>> with
>> the new oil on an oil change or even treating the fuel with the 
>> stuff.  I
>> read several aviation related mail lists and its use seems pretty 
>> common
>> on aircraft engines....    Any  chance MMO would cut down on the turbo
>> oiling problems on our cars?
>>
>>
>> Thanks,
>>
>> Paul Magid
>> pmagid at magid.org
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