Re: [ST] octane & the Mobil 1 questions

[Erik Miner <axeis@xxxxxxxxxxxxxx>]

I wonder if ALL fuels are actually exactly the rated octane that the pump 
sez?? And of course don't forget that many gas stations have shared fuel 
hoses for all grades so one may get a bit of regular even when filling with 
higher grades. I use premium, have for 20K miles the bike runs perfectly.. 
always has..never a ping or a surge or a anything. Pulls smoothly at all 
RPMS..  Don't really care about the extra $.50 a tank I spend, Don't really 
care about the extra $250.00 I've spent over the 20,000 miles the bike has 
on it.

As for Mobil 1, the Mobil 1 15-50wt  auto oil does NOT have the friction 
modifiers that the other auto grades have.. Just look at the label as long 
as it does not say
"Energy Conserving" all is well  FWIW MCN did a very comprehensive test of 
oils a while back . 15-50wt Mobil 1 has as much anti wear agents as the MX4T...
The fellow who did the report for MCN also posted his findings on the 
Internet BMW Riders site take a read
http://www.ibmwr.org/otech/oilreport.html

Lots of folks out there have run Mobil 1 15-50wt  for MANY, Many miles with 
zero reported clutch or other wear problems.

Erik

>The reality of it all is to run the lowest octane gas that does not ping in
>your motor.
>I run mid grade stuff in my RS and I get better mileage and better plug life
>than with premium gas. Higher octane gas burns slower to reduce pinging
>(detonation) and consequently some of it goes out the exhaust, so you need a
>quicker burning fuel to allow more use of it in the combustion chamber, with
>better mileage being the advantage and it also keeps the plugs cleaner.
>Contrary to popuar belief, High octane itself does not imprve performance
>one iota. High octane racing fuel has other additives in it to improve
>performance. High octane pump gas does not have these additives.
>Bare
>
>
>
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