Never seen this before. At a nearby indian reservation gas stationI saw some 86 octane gas?!?!

Please do not post here about how this should not be used, I will beat you to it. No one should put 86 octane in their A4. Period.If you want some more info on this issue, go search for 'octane' and read the 2,000 posts about octane and your A4.

So my question is about cars in general, not Audis. For regular cars, Hondas Civics, Nissans Altimas, Chevy Malibus, or whatever other cookie cutter cheapo car out there on the road running 87 octane, would they really be designed to accept 86 octane? For a penny per gallon, I don't know why you would not follow your owners manual, but I am sure some will. I also believe that cars can handle it as they are designed to deal with the occasional tank of bad gas etc, but what happens when you get a bad tank of 86? Seems like you are really pushing it and putting something in your car that is officially not recommended by any car manufacturer. Any thoughts? Would you run it in your 92 Accord or 89 Ranger?

Admins, how do you choose an Audi platform for this question? Doesn't this belong in the general A4 section? I just know there is some goober in the B6 section that will never see this post but needs to.

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I lived on the Navajo Reservation in Arizona for like 10 years and they had 86 octane...it's also the lowest you can buy across all of New Mexico (there is no 87 on the Navajo Rez nor in New Mexico). I don't really know why that is, but, obviously, I always put 86 in my Dodge Dakota and there were never any issues. Wait, what was your question?

 

Where do i get some! Sooo cheap.

Just kidding.

 

Oh and for one more time. Unlesss you have a certin tune for you car that only allows you to except 93 octane you can use anything you want. That is why you have a knock sensor. I know somone with a 04 1.8T 85K on the clock and he runs 87 all the time. Other than the time i put 93 in it when i had it for the day---All its life its ran on 87

It retards the timing, and decreases HP. Nothing else. Just becuase you have a highend german car does not mean you have to put 93 in it unless you have a tune for that. Or destin to reach a certin HP and or have a built engine.

VW Manuals say only run 93. However dealerships push you towards 87.

And some how i determined to butcher the wordCertain like six times.

 

Nope, I do not believe you. I think that this is the only 86 octane in existence due to the recent hike in gas prices and is part of some indian conspiracy which I have not figured out yet. Seriously though, I really didn't think this was common anywhere in the US.

I think everyone could use it and not have a problem, but is the car really designed for it? Where is the limit? If I see 85 octane next week, would the knock sensors be working overtime. At what point does the car say NO!

That is right 01AudiA4, 87 octane is fine. Modern electronics can surely handle it but there are some sacrifices. Just how low can it go though?

 

Yeah, I lived in Los Alamos and they had 86 gas... My cousin put it in his shitty maxima, so I guess it fine...

 

How low yes, Idk about 85 maybe newer cars. When our cars were made and all the electronics were put in, 87 was around therefore we can use it. 85 ehh it might not beable to retard that much and then you f'd.

But you can run 87 as long as you have the car, gas milage just sucks so does your power.

 

OMG, talk about options. that just wierd.

 

^ more than anyone needs. All you need really is 87 and 93. gas should be cheaper if they just did that. [:@]

Since its NOT an A4 topic, its OT section material.

Oh, and the lower the octane the less emissions. Think CO uses it as its Reg gas

 

Areas that are at high elevations sell lower octane because cars need lower octane to run the same adv timing and end up running the same AFR. This is why cars running at high elevation on the same fuel they would run at sea level can run way more adv timing seeing that the air is much thinner.