Uh-oh... Well, please read my post below where I ran two full tanks of 89 through my MS3. After you read it, decide for yourself. As you will see, the discussion got pretty "lively" at times.
http://www.mazdas247.com/forum/showthread.php?t=123714495
Gas Question??????
- Thread starter WonderMike
- Start date
Uh-oh... Well, please read my post below where I ran two full tanks of 89 through my MS3. After you read it, decide for yourself. As you will see, the discussion got pretty "lively" at times.
http://www.mazdas247.com/forum/showthread.php?t=123714495
micronesia
Member
Oh thanks! Yeah I see their point that there's no reason to go cheap on gas with a car like this, but I also think they are wrong for giving you a hard time when you were doing it for purely scientific inquiry, and had done enough research to feel fairly confident that you wouldn't destroy your car from 2-3 tanks of 89.
BTW, why does everyone say you have to put 93 when the mazdausa website says you only need 91?
I think for doing an experiment its good to know that its not going to blow your car up or cause major problems after a couple fillups but if your just doing it to be cheap and only run 89 its not the best idea.
Depending on what part of the country/world you are in some places only offer 91 as their premium, others offer 93 as premium. In Michigan they have 93 and sunoco has 94 as their premium+
You are welcome. As you can see from the post, it didn't hurt my car at all.
As far as why people insist on 93, I don't know why they say that. I have always maintained 91 is perfectly fine. (Per the manual.) It simply isn't available most places around here.
MikeHTally
Member
- :
- 2008.5 Speed3, 2006 Chrysler 300C, 2003 Ram 1500
93 octane from Sam's or Costco, usually Sam's
peter.sellers
Member
- :
- MS3
I usually use Chevron 93 (with it's magic techron 
. Also remember that the hose and the plumbing from the fill up point to the the bottom where the gas is stored at the gas station hold close to 1.5 gallons. So you might think that you got 10g of 93 gas, but its really 8.5g of 93 and 1.5g of whatever the guy before you used.
Of course this is only true at those stations that have a common hose and for all grades.
I learned this as a biker; to never fill the teeny 4.5g bike tank until you have only 0.5g remaining.....
. Also remember that the hose and the plumbing from the fill up point to the the bottom where the gas is stored at the gas station hold close to 1.5 gallons. So you might think that you got 10g of 93 gas, but its really 8.5g of 93 and 1.5g of whatever the guy before you used.Of course this is only true at those stations that have a common hose and for all grades.
I learned this as a biker; to never fill the teeny 4.5g bike tank until you have only 0.5g remaining.....
FrequentFlyer
Member
- :
- 2008 CWP Mazdaspeed3
I get gas on a US Air Force base. Price is usually a few cents cheaper and I get to pump it myself, which is worth another few cents a gallon to me. Here in NJ, it's "unlawful" to pump your own gas, as if it takes an enormous amount of brainpower and skill. I don't know what kind of gas it is, but the car seems to run fine on it for $3.59 a gallon (93 octane).
Here in NJ, it's "unlawful" to pump your own gas, as if it takes an enormous amount of brainpower and skill. I don't know what kind of gas it is, but the car seems to run fine on it for $3.59 a gallon (93 octane).I've been running 89 occasionally, especially when gas was up around $4.00 per gallon. No ill effects noted, and I was paying attention.
I keep a mileage log that I can type up if anybody is interested. Miles per tank, gallons added, octane, MPG. Mileage for me is roughly the same with 89 and 93. I've been getting around 350 miles per tank.
I generally fill up with Exxon, sometimes Shell.
I keep a mileage log that I can type up if anybody is interested. Miles per tank, gallons added, octane, MPG. Mileage for me is roughly the same with 89 and 93. I've been getting around 350 miles per tank.
I generally fill up with Exxon, sometimes Shell.
I think that is oversimplifying things a bit. Yes, from a hydrocarbon quality perspective that is true. But the ratio of heptane to octane, as well as additives (or lack thereof) play important roles as well.
micronesia
Member
If you are filling up above a third, I don't see why you can't alternate between 89 and 93 to average out the octane to a reasonable number.
FrequentFlyer
Member
- :
- 2008 CWP Mazdaspeed3
I go through 6, sometimes 7 tanks a month with my commuting and I don't even attempt to run 89 occasionally to save money. Even if I did 3 tanks of 93 and 3 tanks of 89, I'm looking at about $8 a month savings. Not really worth it IMO.
FrequentFlyer
Member
- :
- 2008 CWP Mazdaspeed3
The only way to get the most out of E85 is to design a motor to only run on E85 and not be a "flex" motor because it is not as efficient run in a gasoline.
6
60181
no thanks. E85 is the devil and is directly related to the cause in food prices going up. not to mention it's far more inefficient to run. they need to begin seriously considering the bio-fuel from algae and then we'll be able to see a serious price drop. however that won't happen as the powers in control don't want low prices or profits.
MikeHTally
Member
- :
- 2008.5 Speed3, 2006 Chrysler 300C, 2003 Ram 1500
E-85 is a hoax. Much less power than gasoline and FAR more expensive to produce.
