 » Site Navigation | | | | » Recent Threads | | | 1999 M3 Swap 09-07-2023 10:10 PM 05-02-2024 08:18 PM 6 Replies, 405,319 Views | |  |  |  | |  05-24-2008, 01:53 AM | #1 | | Junior Member Join Date: May 2008 Location: PA Posts: 2 |  Should I keep it High Octane or Whatt?
So yeah, gas is a little expensive and i have been wondering if it would be okay to put 89 in my Ti, would it effect my milage that much and would it be bad for my engine? |  |  | | 05-24-2008, 02:31 AM | #2 | | Senior Member Join Date: Sep 2007 Location: asdfasdf Posts: 10,002 |
89 should work just fine, it's what BMW recommends so I don't think you'll have a problem | | | | | 05-24-2008, 03:21 AM | #3 | | Senior Member Join Date: Aug 2005 Location: Florida Posts: 2,525 |
All of my BMWs have always said premium gas in the manual. Which is considered to be 91.. But yeah, you should be fine with 89.. It will hurt performance a bit as the adaptation will pull a bit of timing from the motor. | | | | | 05-24-2008, 03:22 AM | #4 | | Senior Member Join Date: Nov 2006 Location: Stamford, CT <-> Boston, MA Posts: 1,393 |
So I think I'll downgrade from 93 to 91 octane too.. __________________ 
BMWCCA #403399
2012 Mini Cooper S Clubman, 6-Speed
Loaded
2001 325xi, Winter Package, 5-Speed
Traded
1998 318ti, Active, Automatic, TOTAL LOSS R.I.P. 10/20/08
Bilstein Sport Shocks/Struts . H&R Sport Springs . Strut Reinforcement Plates . RSM Reinforcement Plates . Fogg Airbox . X-Brace . Bosal Brospeed Catback | | | | | 05-24-2008, 06:08 AM | #5 | | Senior Member Join Date: May 2007 Location: LA, Bellflower, CA Posts: 3,613 |
93? dang. i dont find that around here in SoCal often. bet its expensive. __________________ 
-Theta Chi-
Float like a cadilac, sting like a BIMMER
.... my socket is just too thick and won't fit in the hole! damnit!
Marv's 332ti is in the werks. Stay tuned ya'll  ...
Check list: S52 swap, manual transmission swap, 3.25 LSD with M Coupe diff cover, SuperSprint muffler, M3 style mirrors, AFE intake, ASC delete, M50 Manifold swap, UUC strut bar, ZHP lighted knob, Vaders, M-tech interior, OEM armrest, AC Schintzer front lip, AC Schnitzer rear spoiler, Roof spoiler, 18'' rims, M3 front drilled brakes, LED interior lights, 3 spoke Euro style steering wheel, OEM roof spoiler and bike holder, Thule fairing, Euro tail lights, oil pressure guage, carbon fiber hood painted to original paint (still showing CF weaving), what's next to do...? | | | | | 05-24-2008, 09:17 AM | #6 | | Senior Member Join Date: Mar 2008 Location: FEASTERVILLE,PA Posts: 101 |
You should have no probs running midgrade, if for reason you start hearing pinging you should up the octane rating.
What part of PA are you?
You don't drive a Green Automatic Active package TI, do you? __________________
1998 318ti active, 5spd. Black leather with Titansilber metallic paint.
Trying to consume liquefied hops every second of every day. Mmmmm Hops... | | | | | 05-24-2008, 10:36 AM | #7 | | Senior Member Join Date: Jun 2006 Location: Boston, MA Posts: 1,152 |
93 or 91 octane works just fine on the ti so far. Most of the Sunoco gas station it's only like 3 cents difference between the grades. | | | | | 05-24-2008, 05:54 PM | #8 | | Senior Member Join Date: Oct 2007 Location: Eugene Oregon Posts: 6,182 |
its like 12-20 cents between grades here.
in oregon it was always set at 10 cents per grade.
and it goes 87, 89, and 91 usually __________________
-Josh
Sold-1995 318ti, Club Sport, Hellrot
Sold-1996 318ti, Active Model, Boston Green
Current- 1995 318ti, sport model, schwartz
| | | | | 05-24-2008, 08:27 PM | #9 | | Senior Member Join Date: Oct 2005 Location: Quad Cities, Iowa Posts: 2,110 |
Yeah Ive gone over to 89 exclusively now that 91 is over $4 and I dont even want to think about what 93 is at now... __________________
"Drive Fast and Take Chances" | | | | | 05-24-2008, 09:25 PM | #10 | | Senior Member Join Date: Sep 2007 Location: asdfasdf Posts: 10,002 |
Quote: Originally Posted by thesk8nmidget  and it goes 87, 89, and 91 usually | in Vermont it's 87, 89 and 93, we're awesome like that, costs $4.099 in most places for 93 though  | | | | | 05-24-2008, 10:26 PM | #11 | | Senior Member Join Date: Oct 2005 Location: Quad Cities, Iowa Posts: 2,110 |
$4.09 for 93? Thats pretty good, its $4.18 for 91 here. __________________
"Drive Fast and Take Chances" | | | | | 05-24-2008, 10:34 PM | #12 | | Senior Member Join Date: Sep 2007 Location: asdfasdf Posts: 10,002 |
I was in New York this weekend and I saw high octane gas at most places was $4.50 or more  | | | | | 05-26-2008, 08:13 PM | #13 | | Senior Member Join Date: Nov 2006 Location: Stamford, CT <-> Boston, MA Posts: 1,393 |
I was paying $4.60 back in Stamford, it's probably more now. I went to Stop & Shop for gas, which has surprisingly cheap gas, but no 91 87, 89 and 93. __________________
BMWCCA #403399
2012 Mini Cooper S Clubman, 6-Speed
Loaded
2001 325xi, Winter Package, 5-Speed
Traded
1998 318ti, Active, Automatic, TOTAL LOSS R.I.P. 10/20/08
Bilstein Sport Shocks/Struts . H&R Sport Springs . Strut Reinforcement Plates . RSM Reinforcement Plates . Fogg Airbox . X-Brace . Bosal Brospeed Catback | | | | | 05-26-2008, 08:21 PM | #14 | | Senior Member Join Date: May 2007 Location: LA, Bellflower, CA Posts: 3,613 |
still paying about $4 bucks for 91. but that was over a week ago. havent checked what its at now. im too scared to find out. lol. __________________
-Theta Chi-
Float like a cadilac, sting like a BIMMER
.... my socket is just too thick and won't fit in the hole! damnit!
Marv's 332ti is in the werks. Stay tuned ya'll ...
Check list: S52 swap, manual transmission swap, 3.25 LSD with M Coupe diff cover, SuperSprint muffler, M3 style mirrors, AFE intake, ASC delete, M50 Manifold swap, UUC strut bar, ZHP lighted knob, Vaders, M-tech interior, OEM armrest, AC Schintzer front lip, AC Schnitzer rear spoiler, Roof spoiler, 18'' rims, M3 front drilled brakes, LED interior lights, 3 spoke Euro style steering wheel, OEM roof spoiler and bike holder, Thule fairing, Euro tail lights, oil pressure guage, carbon fiber hood painted to original paint (still showing CF weaving), what's next to do...? | | | | | 05-26-2008, 09:29 PM | #15 | | Senior Member Join Date: Aug 2004 Location: state college, pa Posts: 3,431 |
The inside of my '97 fuel cover says 89 AKI minimum, which is the same as PON (the standard used on US pumps).
Can those with the 91 rating see that it's the same standard? Though, 91 RON would be ~87 PON/AKI so that doesn't really make sense. Also, if you know where the car was originally sold that might solve the discrepancy. __________________
I scream, you scream, we all scream for ZOMBIES. | | | | | |
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