As was said before, I don't believe that his anecdotal evidence is anything near proof of Mobil 1's use of a mineral base. I still believe that Mobil 1 is all Group IV & V with a trace of mineral "carrier" oil. It's their marginal barrier protection (dating back years) that I have trouble with.
I think
jjbula's theory/explanation is best. Mobil 1 may be substituting a higher-viscosty fluid composition for an EPA-friendly (read: scant/marginal) barrier package.
I think the way Mobil 1 SuperSyn is currently being marketed is in response to MANY complaints that users have experienced significant wear while using their Tri-Syn.
Cold Fusion:
"... most Formula 1 cars use Mobil 1 almost exclusively, as do road racing vehicles (24hr LeMans, Nurnburg Ring). F1 cars operate in the 16k-17k rpm range on a regular basis,that says quite a bit."
It's obvious that Mobil wants consumers to THINK this way but I've only known of a few examples where serious race teams use off-the-shelf Mobil 1 and one was Indy cars where the engine power and development are strictly limited. If you look on the back of 15W50 SuperSyn, it says suitable for use in "amateur" racing. The examples you cite are professionals, and ceratinaly NOT amateurs. This only makes sense as a REAL racing oil should not have high levels of detergents, anti-corrosives, pour-point depressants, etc ... Racing lubricants need to be formulated differently ... and I would not take a team seriously if I knew they used some off-the-shelf product when much better alternatives exist.
My most recent visit to Limerock Park raceway showed about 90% of the competitiors (SCCA Trans-Am & Speed World Challenge ... professional racers) that advertised an oil choice used Red Line Oil. This is what one expects of racers.
I DID hear Ron Dennis of MacLaren comment on Mobil, however. He said it was a great company which was very helpful to him ... which is what one would expect when you figure he gets dozens of millions of dollars from them every year. But he never once mentioned or even implied that he used off-the-shelf Mobil 1 in their F-1 cars.
"I dont remember how many websites I've visited that state they use Mobil 1 in their cars and after tearing them down after 100,000 to 200,000 miles or MORE and they were amazed at what they had seen: internal engine components that met new specs."
That's odd. Mobil 1 couldn't even prevent my Honda Civic from developing piston-slap (piston skirt wear) for 70,000 miles.
The only example I know of which cites the results you mentioned ... is Mobil's own million dollar advertising campaign.
Sorry
Cold Fusion, but your posts fail to assuage my skepticism.