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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

 
 
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Old 10-15-2008, 10:49 PM
jwac's Avatar
jwac jwac is offline
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Location: San Francisco Bay Area
 
Join Date: Dec 2006
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Mein Auto: '14 335i 6MT
Quote:
Originally Posted by desertdriver View Post
Dont confuse yourself with the synthetic vs petroleum oil arguements. Its all about hydrocarbon chain length and its relation to temperature dependent viscosity. All synthetic oils are hydrocarbons, just like petroleum based oils, they just have different polydispersity(better in synthetics). Think like a scientist not a lawyer. Molecular physics is molecualr physics, whether you pull the molecules out of the ground or synthesize them in a lab or plant the behaviors are consistent. the greater polydispersity of the mineral oils make them a bit better at lower temps.


Here is an article that compares the two if you care to read it. The (petroleum based)mineral oils actually lubricate better at low temps(thicker film before parts expand). this means that its even more important for synthetics to warm them up. Yeah, I used to be a metallurgist, so I know about expanding metals.

http://www.machinerylubrication.com/...?articleid=586
Don't argue with the science guy.
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2014 335i Sedan 6MT
Estoril Blue | Black leather | Dark Burl Walnut
M Sport | Premium | Driver Assistance Plus | Technology | Dynamic Handling | Cold Weather | 19" 403M Wheels | M Sport Brakes | Harman Kardon | Rear Window Shades | Auto High Beams

09.16.13 European Delivery

Past:
2011 335i Coupe 6MT (ED)
2010 135i Vert 6MT (ED)
2007 335i Coupe 6MT (ED)

2006 325i Sedan 6MT
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