Tks for this one - I just began using Mobil 1 in my 1984 which has driven the WBX for 206K miles w/o problems.  Reading your note, which is understandable to this non-engineer, non-mechanic lets me know to find another lubricant.
Sam Conant
Colchester, Vermont
-------------- Original message --------------
From: "Chris S." <mrpolak@YAHOO.COM>

> Perhaps Mobil 1 is a favorite with the racing crowd?
>
> I've had no problems in several engines and cumulative 300K of driving. I
> started using Mobil 1 in my WBX at 124K miles and sold it with 189K miles with
> no engine problems.
>
> Don Hanson wrote: Mobil One has a bad rap with the Porsche
> crowd. A few of my buddies
> collected episodal evidence that it's been involved in more than it's share
> of blown motors..I know, not particularly scientific. But I personally blew
> up two motors before I quit using that stuff. One was a brand new Triumph
> Daytona with less than 2000 miles (luckily, warranted still) and one was a
> very pricey 32 valve 4 cam Porsche V8...Of six of my acquaintances who blew
> up their 928s 4 were running .....Mobil one...
> I use Amsoil when I use synthetic...Mobil one is pretty watery when it
> gets hot and froths up badly...
> But, maybe in a low stress motor like a wbx it may be ok...Oh yeah, I blew
> up a KTM 520, too, almost new, running that stuff.
> With so many other oils to choose from, I avoid Mobil one...because of my
> own experience and because of the hear-say evidence that is floating around
> amongst people I respect who know about motors...
> Don Hanson
>
>
>
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