Question about gas
Question about gas
Ive noticed since I have to pay attention to different fuel grade prices, that premium at some places is 91 octane all the way through 93 octane. They all are marked premium and you guessed it, they are all priced the same. WTF is going on here. Is it bad for my car if I come across 91 octane?
-
maxnix
- Posts: 22627
- Joined: Mon Jul 22, 2002 8:11 pm
- Car: 1995 Infiniti Q45
1995 Infiniti Q45t
2000 Infiniti Q45
Re: Question about gas (pouncer11)
Bet the 93 has ethanol. Avoid it if possible.
Re: Question about gas (maxnix)
So 91 is good i take it? Thank you sir
-
NightRiderQ45
- Posts: 969
- Joined: Wed Apr 11, 2007 11:00 am
- Car: 1998 Infiniti Q45
- Location: Houston, TX
Re: Question about gas (maxnix)
Not true at all! Back in the south eastern area where I'm from, all of the premium is 93 octane. I didn't see 91 until I came here. I know one thing for sure, 93 burns slower than the garbage 91 octane here in Oklahoma.maxnix wrote:Bet the 93 has ethanol. Avoid it if possible.
I frequently drive from Oklahoma to Alabama and my mpg is always better coming from Alabama to Oklahoma because of more usage of 93 octane.
-
Q45tech
- Moderator
- Posts: 14296
- Joined: Tue Apr 30, 2002 3:19 am
- Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl
Re: Question about gas (maxnix)
Marketing companies [the brand of the station] place the stickers on the pumps...................only the refiners know the true octane of the gasoline on the day of production.
The exact same product can be labeled differently based on Altitude as a sealevel costal 91 may act like a 93 at 1,000 feet above sealevel.A 91 made in Houston comes to ATL by pipeline and gets labeled 93, then some of it gets trucked to Savannah and gets labeled 91
States test octane by looking for a density difference between regular and premium................thus the regular vs premium name. Unfortunately this really tells you nothing OCTANEWISE.
All one can assume is PREMIUM is probably higher in octane than regular or midgrade. Or at least it was when made at refinery, what happens in the ensuing 2 weeks while it travels to your service station is often another matter, what happens when it sits in tanks and your vehicle tank before it squirts into engine is another matter also.
No Truth in Labeling for gasoline.
One thing you can probably be sure of is that the chance it was made by the Branding company is very remote in many areas.................unless the branded station is within 50 miles of a Branded Refinery
This might be interesting to some:http://www.wipo.int/pctdb/en/w...=DESC
The exact same product can be labeled differently based on Altitude as a sealevel costal 91 may act like a 93 at 1,000 feet above sealevel.A 91 made in Houston comes to ATL by pipeline and gets labeled 93, then some of it gets trucked to Savannah and gets labeled 91
States test octane by looking for a density difference between regular and premium................thus the regular vs premium name. Unfortunately this really tells you nothing OCTANEWISE.
All one can assume is PREMIUM is probably higher in octane than regular or midgrade. Or at least it was when made at refinery, what happens in the ensuing 2 weeks while it travels to your service station is often another matter, what happens when it sits in tanks and your vehicle tank before it squirts into engine is another matter also.
No Truth in Labeling for gasoline.
One thing you can probably be sure of is that the chance it was made by the Branding company is very remote in many areas.................unless the branded station is within 50 miles of a Branded Refinery
This might be interesting to some:http://www.wipo.int/pctdb/en/w...=DESC