Am I the only one noticing difference w/93 octane?

perfution · 07-28-2004, 04:56 PM

Running 8.5 to 1 compression, I'm suprised at how much difference there is in performance (if that's what it can be called w/115hp) between 89 and 93 octane.

PJM99 · 07-28-2004, 05:04 PM

higher octane is recommended for these cars though. The faster/cleaner burn is easier on the moving parts.

Dodge recommends my truck run with 87, they claim higher octane will hurt the engine. My Cobra only likes 93+, but the 9.5 to 1. Low octane in that is not good.

dB · 07-29-2004, 06:02 AM

My 1.8L (10:1) really only pings during quick upshifts when I get back on the gas. It's bad with 87 and much improved with 93. I think I get slightly better mpg with 93 (maybe 1-2).

'81 tic-tac · 07-29-2004, 09:24 AM

i tried it a few times, running a few months on 89, then switching to 93.. every time i switched to 93, the car ran better, felt more peppy, and i got better gas mileage.

i am witness to it's benefits.. the price sucks though, usually .20 more for each gallon

dB · 07-29-2004, 10:31 AM

Given that the difference stays at 20 cents. Now, Shell has been charging 2 more cents/gal for their new "V-power" stuff. I wish they would quit that!

Waskly1977 · 07-29-2004, 02:38 PM

My car pings like crazy with 89. Put in the 93 and most of it goes away. I have a 272 cam and the timing tweaked a bit but it pulls great at around 4500 rpm. Forget it if I'm running 89 though...

Evilclown · 07-30-2004, 02:50 PM

My checking account shrinks much faster on 93.

07-28-2004, 05:04 PM	#2
PJM99 AudiWorld Super User Garage is empty, add now Join Date: Jan 2004 Posts: 19,153	Not much difference in performance........ higher octane is recommended for these cars though. The faster/cleaner burn is easier on the moving parts. Dodge recommends my truck run with 87, they claim higher octane will hurt the engine. My Cobra only likes 93+, but the 9.5 to 1. Low octane in that is not good. __________________ AIM: Spankypjm ----- "In the desert there is no sign that says, Thou shalt not eat stones." - Sufi proverb <big>1985 Audi 4000 S quattro</big>

07-29-2004, 06:02 AM	#3
dB AudiWorld Super User Garage is empty, add now Join Date: Mar 2000 Posts: 2,283	Re: Am I the only one noticing difference w/93 octane? My 1.8L (10:1) really only pings during quick upshifts when I get back on the gas. It's bad with 87 and much improved with 93. I think I get slightly better mpg with 93 (maybe 1-2). __________________ <a href="http://registry.audiworld.com/audi/registry/details.asp?car=3528"> </a> "Place where my Ohio flag USED to be."

07-29-2004, 09:24 AM	#4
'81 tic-tac AudiWorld Senior Member Garage is empty, add now Join Date: Dec 2000 Location: NJ Posts: 1,407	i only run on 93... i tried it a few times, running a few months on 89, then switching to 93.. every time i switched to 93, the car ran better, felt more peppy, and i got better gas mileage. i am witness to it's benefits.. the price sucks though, usually .20 more for each gallon __________________ 1981 Audi 4000 4E 1999 BMW Z3 Coupe 2.8 2006 Triumph Daytona 675

07-29-2004, 10:31 AM	#5
dB AudiWorld Super User Garage is empty, add now Join Date: Mar 2000 Posts: 2,283	But at $2/gal it's a better buy than at $1/gal. Given that the difference stays at 20 cents. Now, Shell has been charging 2 more cents/gal for their new "V-power" stuff. I wish they would quit that! __________________ <a href="http://registry.audiworld.com/audi/registry/details.asp?car=3528"> </a> "Place where my Ohio flag USED to be."

07-29-2004, 02:38 PM	#6
Waskly1977 AudiWorld Member Garage is empty, add now Join Date: Nov 2001 Location: PNW Posts: 224	Absolutely... My car pings like crazy with 89. Put in the 93 and most of it goes away. I have a 272 cam and the timing tweaked a bit but it pulls great at around 4500 rpm. Forget it if I'm running 89 though... __________________ Steve O - 09 A4 2.0T / Tip / P+ / Sport - 00 S4 - RIP - 93 S4 - 83 GTI - 77 Rabbit

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07-30-2004, 02:50 PM	#7
Evilclown AudiWorld Uber User Garage is empty, add now Join Date: Dec 2000 Posts: 41,192	I notice a huge difference. My checking account shrinks much faster on 93.

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