re: normal oil temps

[Ralph Poplawsky <rlpplsky@ix.netcom.com>]

My '91 200Q runs the same oil temp as Chris Miller's (below).  I ran dealer
oil when the car was in-warranty and have since run Mobil 1 5w50 and Castrol
Syntec 5w50 all with no effect on oil temps.

Ralph Poplawsky
'91 200Q

At 03:40 PM 2/5/98 EST, Chris Miller wrote:
>Phil Payne wrote:
><<> With the previous oils (Amsoil 2000, Castrol Syntec) oil temps
>> used to stay to around 130 C while cruising at 80 MPH 
>> (130 km/h), and once got to 150 C while driving in the hot
>> desert near Las Vegas. However, with Mobil 1 0w30, the cruising
>> temp stays steady at one notch below 100 and even going uphill
>> at 90 MPH the oil temp stays at the 100 mark.
>
><130 degrees is about right for sustained cruising.  100 is _way_ too low.
>
><As well as being below the design temperature, 100 is not enough to remove 
>some of the nasties that gradually blow/seep past the rings.  Such nasties 
>include even water, as a combustion product.  Getting the oil up to design 
>temperature helps evaporate these through the breather system.
>
>- -- 
>< Phil Payne
> Committee Member, UK Audi [ur-]quattro Owners Club>>
>
>The oil temp on my '91 200q runs up to the line _after_ 60c; I thought that
>was the 100c mark.  It doesn't ever reach the 130c mark (half-way), even with
>sustained boost and spirited driving around town, and never approaches the
>170c mark (all the way).  Could easily be a low-reading guage, or an oversized
>oil cooler.  Average driving: between the first and second marks.  Anyone else
>care to comment?  10w30 mobil 1, also similar with 15w50 mobil 1.  My old
>4000csq ran hotter...
>Chris miller, windham NH
>
>guage in ascii:
>
>  /       /            /                /
>60                 130          170
>
>