What gas do you use?
08-20-2009, 07:09 PM
#51
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My Ride: 2007 BMW 550i Sport Pkg, 6MT
Originally Posted by KREATE' post='984051' date='Aug 20 2009, 06:09 PM
2004 525 189,000miles about 185,000 have been 87 octane..
08-20-2009, 07:12 PM
#52
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My Ride: 2006 530i Alpine White on Black interior, Sport and Premium Package, Steptronic, Navigation, Xenon Adaptive Headlights, Mtec V2.1 angel eyes,Hoen Fog Lights, Full M-Tech kit, ACS pedals, LED plate lights, CF Steering Wheel badge, CF Titanium trim, OE
91 here 
08-20-2009, 07:35 PM
#53
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Originally Posted by hmc' post='984166' date='Aug 20 2009, 11:09 PM
That's enough to convince me to use 87 (if gas mileage doesn't drop).
if you burn through 20 gallons a week, it is only like 100 bucks a year more.
08-20-2009, 08:11 PM
#54
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My Ride: 05' 545 alpine white/grey
cold weather package, premium package
I used BP for a long time but stopped, my SA told me that BP has 10% ethanol, so I now use Citgo (SA recommended). By the way I use 93 octane
08-20-2009, 08:14 PM
#56
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My Ride: 2004 530i | Sapphire Black | Sport | Premium | NAV | Logic 7 | DPE R07 Variant S Gloss Black with Polished Lip 20x8.5 front 20x10 rear | Falken FK452 tires 245/30/20 front 275/30/20 rear | H&R Coilovers | Smoked Tail Lights | M5 trunk spoiler | AC Schnitzer style roof spoiler | HID 8000K headlights & foglights | 35% tint all around | Sprint Booster | Speed Innovation ECU tuning | M5 trunk finisher | M-Tech body kit | Remus Quad Exhaust | AC Schnitzer style pedals | Euro Stickers | RPi Ram Air Induction | Smoked LED Side Lenses | AC Schnitzer style e-brake handle | AC Schnitzer style shifter | AC Schnitzer style iDrive knob | AC Schnitzer style carbon fiber diffuser | carbon fiber hood/trunk/steering emblems | carbon fiber grilles | carbon fiber door pillars | MTEC v2 Angel Eyes | Hamann style carbon fiber splitter
91 @ Chevron
08-20-2009, 08:28 PM
#57
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My Ride: 2004 545i Sport, ti silver/gray, CWP, Logic 7, PDC, Nav, elec shade, lumbar, FDRS
2000 Honda CBR 929
1999 Lexus GS400, Nakamichi
I use the least expensive 93 octaine I can find, figuring that the lowest priced gas turns over quickest and is therefore the freshest. At home, it is usually at BJs Wholesale Club or Hess.
08-20-2009, 08:49 PM
#58
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My Ride: 2007 BMW 550i Sport Pkg, 6MT
Originally Posted by craigm1841' post='984182' date='Aug 20 2009, 08:35 PM
it completely depends on your timing advance and compression ratio. i dont know about the 550, i would imagine 87 would be okay, but it cant hurt to put premium in, and it doesnt cost that much more.
if you burn through 20 gallons a week, it is only like 100 bucks a year more.
if you burn through 20 gallons a week, it is only like 100 bucks a year more.
I would rather spend $100 for another 2 tanks of gas...
Of course, if gas mileage drops with 87, that won't make sense.
08-20-2009, 10:06 PM
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Originally Posted by hmc' post='984243' date='Aug 21 2009, 12:49 AM
550 has compression ratio of 10.5:1. Not that high. The manual says minimum 87 and 91 recommended.
I would rather spend $100 for another 2 tanks of gas...
Of course, if gas mileage drops with 87, that won't make sense.
I would rather spend $100 for another 2 tanks of gas...
Of course, if gas mileage drops with 87, that won't make sense.
whether the argument is for quality or peice of mind, the discussion of whether or not to spend a $1.50 more each month on a 60K car is ludacris.