Was any one of those failures proven to be lubrication related? I mean did
a bearing actually seize up because the correct viscosity, under proper
pressure and at proper temperatures oil actually failed to provide a
lubricant film? Or was it just a coincidence that Mobil 1 was there when a
valve spring broke or head gasket blew or a piston cracked while the
engine was being abused? Keep in mind that Porsches for many years are
known for their ability to keep mechanics employed. You still don't
regularly see 200,000 mile examples.

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Don Hanson
Sent: Wednesday, October 03, 2007 10:40 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Mobil I ... negative..(from digest)

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