Founding Member #2
Join Date: Jun 2006
Location: Orange County, CA
Vehicle: 2008 SLK 55
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IIRC the 229.51 engine oil is fine -- higher specs than with 229.5 (which is what's recommended at least for the SLK 55). The 229.51 is spec mainly for diesel which has higher requirements. The MB dealers are starting to use Mobil 1 5W40 on SLK 55 engines and this is spec for 229.51. Try a search on Google on Mobil1 0W40 vs Mobil 1 ESP formula 5W40.
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Pewter(cubanitsilber metallic)/Beige, PIII package, Airscarf, Hands-Free Communication System, Lighting package; Designo Black Leather Cover on e-brake handle(Thank you Bill T), SmartTop v3.x, John's 3BFM, M113 AMG OEM air filters, Modified R170 ant., clear side-markers & front parking lamps w/error-free LEDs, chromed front & rear turn indicator lamps, steel mesh at battery bay cover & cabin air intake, sock-over-seatbelt buckles, belt-loop guide protectors, Lamin-X fog lamp protectors, bilateral rear fog lamps enabled, AMG crest on gear shift knob