Subject: I switched from 89 to 87 octane recently and now my car runs better....I Author: windhund : member since January, 2006 : 334 posts Posted on: 2006-06-01 18:45:18

seem to be getting better mileage too. I don't understand why this would be the case. I have more power and the car is smoother. Weird.

• How many Miles per gallon do you get on your E32? - AL 2006-06-01 10:13:14 (166 views)
  • AVG MPH=26 AVG MPG=17.4 93 74OIL (nt) - shadetree/pete 2006-06-06 14:53:10 (89 views)
  • Could be the gearing! - mikeym 2006-06-04 13:01:45 (72 views)
  • 20 +/- Mpg all highway - eldragon 2006-06-04 12:39:45 (88 views)
  • look at the pic (pic) - shogun 2006-06-04 05:25:16 (206 views)
    • was he going off the cliff or towed when pic was taken? - sinij 2006-06-04 13:01:15 (85 views)
    • Re: look at the pic - mikeym 2006-06-04 12:56:56 (73 views)
    • Re: look at the pic - mikeym 2006-06-04 12:35:08 (67 views)
  • 14.3-14.7 litres/100km = 16.5mpg - Nick (Australia) 2006-06-03 09:33:58 (78 views)
  • I drive my '88 750iL on the autobahn about 90% of the time... - chrisf 2006-06-02 08:01:56 (145 views)
  • 16.8 MPG average - 740ipilot 2006-06-01 23:33:25 (97 views)
    • Glad to see you tried (url) - Shayne 2006-06-02 09:55:02 (87 views)
      • I had to! - 740ipilot 2006-06-02 15:20:24 (90 views)
        • Re: I had to! - Shayne 2006-06-02 15:59:37 (78 views)
          • I know little of chemistry, it's one of the few things on this planet - 740ipilot 2006-06-02 21:17:34 (164 views)
            • Re: I know little of chemistry, (url) - Shayne 2006-06-03 13:52:15 (78 views)
  • 735i 5-spd: 14-15 city, 25-26 hwy , 18 mixed . . . - gale 2006-06-01 21:00:40 (76 views)
  • Re: How many Miles per gallon do you get on your E32? - gus 2006-06-01 20:41:57 (128 views)
  • Manually computed average works out to 15.3 mpg over 2 months - bcweir 2006-06-01 20:06:15 (90 views)
    • BC, I really hate doing this, but if you use your gas tank capacity - leersmd 2006-06-02 00:36:46 (103 views)
    • Get some REAL miles under your belt and I'll bet you - leersmd 2006-06-01 23:36:43 (86 views)
  • 18 mpg average (nt) - RM 93 740iL 2006-06-01 19:28:41 (73 views)
  • 14.9 average. 89 750IL (nt) - Paparon 2006-06-01 19:10:37 (80 views)
    • wow!! is that ALL highway? (nt) - plbowler 2006-06-01 21:00:40 (81 views)
      • combo miles........Remeber it is HER car (nt) - Paparon 2006-06-02 11:53:27 (62 views)
        • 15.9 combined? thats insane!! I wish I drove like that (nt) - plbowler 2006-06-02 20:41:08 (56 views)
          • oops, 14.9 (nt) - plbowler 2006-06-02 20:42:48 (58 views)
  • 10.4 l/100 km hwy and 13.1l/100km combined - Shayne 2006-06-01 18:22:36 (81 views)
  • Pretty close to mine - nostness 2006-06-01 15:44:16 (91 views)
    • I switched from 89 to 87 octane recently and now my car runs better....I - windhund 2006-06-01 18:45:18 (97 views)
      • Maybe because of higher compression? (nt) - nostness 2006-06-01 19:16:00 (59 views)
        • Actually, windhund, using higher grade gas than your engine requires is wasteful - leersmd 2006-06-01 23:54:59 (144 views)
          • High octane retards spark!? - Shayne 2006-06-02 10:43:55 (110 views)
            • Shayne, thanks for clarifying, pl had it right about - leersmd 2006-06-02 13:35:46 (80 views)
            • I think he meant it explodes later with repect to compression - plbowler 2006-06-02 11:28:36 (76 views)
          • leersmd is right on the money; I'm sticking with the 87 octane (nt) - windhund 2006-06-02 05:58:13 (64 views)
    • I agree with you! I experienced that too by switching to a 91 octane (url) - AL 2006-06-01 16:52:33 (103 views)
  • Re: How many Miles per gallon do you get on your E32? - johan750 2006-06-01 11:58:55 (89 views)
    • Re: How many Miles per gallon do you get on your E32? - jrs740 2006-06-01 20:38:53 (108 views)
  • 19 city / 25 hwy ('89 735i manual tranny) (nt) - DavidC 2006-06-01 10:51:33 (66 views)
    • 12 city: 21-23 highway (nt) - leersmd 2006-06-01 12:15:32 (72 views)
  • Sounds about right. - plbowler 2006-06-01 10:23:54 (84 views)
    • wait a minute, you have a 735, your mileage is too low (nt) - plbowler 2006-06-01 10:58:13 (90 views)
      • I'll try and calculate my MPG manually. Could it be possible its - AL 2006-06-01 11:15:42 (75 views)
        • I get 20-22 mpg highway on my rebuilt M30! (nt) - mikey735i 2006-06-03 20:56:55 (63 views)