View Poll Results: Do you use only premium gas with your crossfire?

Yes

92.21%

7.79%

Voters: 77. You may not vote on this poll

Premium Gas Question

Reply Subscribe

Thread Tools

Apr 10, 2012 | 09:56 AM

#41 (permalink)

onehundred80

Senior Member

Joined: Apr 2006

Posts: 25,432

Likes: 648

From: Ontario

Re: Premium Gas Question

Quote:

Originally Posted by magredvet

Sorry , I us gallon is 8 pints, at 16 Fluid ounces, =128 oz
I Imperial gallon (UK) is 8 pints at 19.999 (alright 20) fluid ounces = 160 oz
To complicate matters more I imp fl oz is 0.9607 us fl oz ????.......... :O)
But I us gallon is about 4/5 of an imperial gallon

I can't read my conversion sheet.

I used to have to do this a lot as Canada used Imperial measurements and we had to convert volumes to the US standard.

1 Imperial gallon = 160 imperial fl ozs (exactly) = 277.41945 cu ins
1 US gallon = 128 US fl ozs. (exactly) = 231 cu ins (exactly)

So, an Imperial fl oz = 277.41945 ÷ 160 = 1.7330 cu ins
a US fl oz = 231 ÷ 128 = 1.8047 cu ins

Thus an Imperial fl oz =1.7330 ÷ 1.8047 = .9608 US fl oz.

You Sir are correct again.

So we can say the US and Imperial fluid ounces are roughly the same when cooking.

Last edited by onehundred80; Apr 10, 2012 at 11:15 AM.

Apr 10, 2012 | 10:02 AM

#42 (permalink)

pizzaguy

Administrator

Joined: Jun 2009

Posts: 13,965

Likes: 1,293

From: Fort Worth, Texas

Re: Premium Gas Question

Quote:

Originally Posted by PNA

Ethanol has a higher octane rating than gasoline and refiners are required to meet certain national renewable fuel standards which effectively is requiring they blend as much ethanol in gasoline as legally possible. Most all (over 90% of all US gasoline) has ethanol in it and a very high percentage of it will contain ethanol at or near the highest legal blend (10% by volume) in order to meet this standard. 15% is now legal but it likely won't be hiting th market until the summer and likely in very localized areas. It is only legal in 2001 and newere cars.

The long and short of it is, I'm not sure how the station owner determined it would only have 3.5% but my guess is he doesn't know what he's talking about. A 10% volume blend is 3.5% percent oxygen by weight, so I think he is confused about what he told you. Also, right now, ethanol is cheaper than gasoline -- and therefore it is cheap octane -- so I would expect it would be a 10% blend.

The stickers on the pump are provided by the wholesaler, I asked the kid behind the counter about it.
He only said that he didn't know if maybe all 93 had lower ethanol or just theirs.

I had learned that it is an octane enhancer after posting in this thread, just today. I just wonder now if the stickers are accurate.

Apr 12, 2012 | 02:52 PM

#43 (permalink)

Md 1987

Joined: Apr 2012

Posts: 9

Likes: 0

Re: Premium Gas Question

Quote:

Originally Posted by GraphiteGhost

Here in SC the have 87, 89, and 93. The XF says it needs 91. So if the car can adjust up two octane ratings, why not down 2 at 89 octane. Thats what I run and its quite a spiffy lil car. I would not go down to 87 but there are a number of folks who are running regular (do a search on octane). Here in SC the difference between 89 and 93 is almost .20 cents so it makes a little difference. Where I will not compromise, is oil changes. Have to use Mobil1 0W-40 at each change!

If a mfg has premium fuel recommended it's not critical.
If a mfg has premium fuel required it must be used.
Or be prepared for problems.
The Crossfire is required.