Octane Discussion Twist

[Marauderer]

Does anyone here know an authority that can answer this question. The local Shell store sells 91 Octane - Non Oxygenated gas and then 92 Premium. Is there any benefit to running one over the other in a stock Marauder and/or one with a chip? Keep in mind this isn't a debate on what octane to run. I'm just wondering if the non-oxygenated at 91 makes up for the loss of the one point or has any other benefits or detriments?

[Marauderman]

Not sure this is any help--probably not--but around my area--there is only 93 as Premium..haven't seen any 91 stuff..even in travels from NC to FLA..least don't recall any.. the "non- oxygenated" throws me though--not sure the good , or the ulgy with that application?? I ,too would need help with what you say--Hummmm... interesting..makes one wonder what the blank is in the 93 stuff when you think about it----"oxygenated"---got to look that up--where is our resident explainer( is that a word) ? --heck--it'll do!! : lol:

[cyclone03]

I've never had the choice between oxygenated and non oxygenated fuel at the same time.

But I can tell you what I've noticed in the past.
When I lived in AZ they used to have O2 gas in the winter,I think it was winter,that stuff made my bike run lean and the milaged dropped,raised the needle one clip and all was well again.
In my cars I noticed my milage would fall off.I don't remember exactly how much but it was noticable tank to tank.

The leanness could cause detonation,so with our cars you may lose power.

If it was me I'd run the 92 and check the milage then switch to the other and check it again.
see if your butt-o-meter can tell the difference.

[GarageMahal]

Very good question. I have been using 92 and am fine with it.

Minnesota has some funny fuel regulations and I have never seen 93 up here. I did some research on it a while back but don't seem to remember a thing about it right now exept that I think Minnesota is one of two states that use 92. I will see if I can retrace my steps sometime soon.

IIRC, oxygenated = ethanal added. The non-oxygenated is recommended for engines that have trouble with the alcohol (older snowmobiles, boats, etc.) I know there is still an ongoing debate about the pros and cons of oxygenated fuel.

jta

[01 Interceptor]

Here in WA we have 87, 89, and 92. They're all of the oxygenated or ethanol added flavors.

[John F. Russo]

In Massachusetts I buy Sunoco. It is available at 93 and 94 octane.

____________
2003 Blue 300B (Canadian) (traction control, mini spare, Trunked 6 disc CD changer,clock-in-the-radio, heated front seats, hood light)
Born about early 2/03
8800 miles
Stock transmission (upgraded with Performance Automatic
clutches and band after stock tranny failed in 8,800 miles)
Wheel locks (Ford)
Mileage: 18 mpg at a steady speed of 80 mph
Tire minder valve stem caps (getting rid of them- unreliable)
Kenny Brown: 6th “signature series” conversion (450 hp) 3/28/03
Dead pedal
Baer front brakes 14 in. two piston, vented rotors
MMX Driveshaft
4.10 gears
Vortech supercharger (7 to 8 psig boost)
Pirelli P-Zero
FordChip
One coil of each front stock spring removed to produce
the “same” effect as an Eibach spring

[deerejoe]

cyclone03:

That's good advice.