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      04-06-2013, 11:55 AM   #13
Brigadier General
FCobra94's Avatar

Drives: '07 E90 335i
Join Date: Dec 2011
Location: MD

iTrader: (1)

I run RLI Bio-Syn 5w-40:

The UOA results I received back were stellar, making the slightly higher cost of this stuff (~$11.75/quart) much more feasible. Furthermore, the oil runs cooler than most "synthetics" so that should really help you out given that you're running upgraded turbos and higher boost.
'07 E90 335i - Automagic - Non-sport
MHD E60|Alpina Flash|Stg 2 LPFP|VRSF 7"FMIC-DP-CP|TIAL BOV|cp-e DCI
Bilstein B6|Dinan Camber Plates|E93 M3 FSB-LCA-Guide Rods|Manzo Toe Arms|HPS 5.0
Sonic Tuning ST100 - 18x8.5 ET35 - Conti DWS 245/40/18 - 10/20 F/R spacers