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Re:High octane fuel?
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Date: 2008/02/26 23:26
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By: fatback
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Status: Admin
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Karma: 3
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Admin
| Posts: 156 |   |
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Ran all that cheap (3.10/gallon) crap out lastnight and filled her up with 93 octane. I got 226.4 and that was driving on empty for three days (I was trying to see how many miles you could go after it came on, I don't think it is a good measure because of the grade of fuel, will try again some other time with 93) It took 18.5 gallons to fill'er up! I was running on fumes it would appear. I will stick with 93 thank you!
MHO,
Fatback
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Re:High octane fuel?
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Date: 2008/02/27 03:21
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By: JTAP
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Status: User
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Karma: 1
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F.J.C.O. Rookie
| Posts: 18 | |
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We only get 91 around here. Its been a long time since I have seen 93 in SoCal pumps.
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Re:High octane fuel?
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Date: 2008/03/29 04:00
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By: mwhunter
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Status: User
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Karma: 0
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F.J.C.O. n00b
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I recently read where a company had finished a long term test with the FJ which ended with around 18,000+ miles on the odometer. "Combined" MPG during their driving came in at 17.3 MPG. I know that some people will be able to get 18-20, but for this post, let's stick with their 17.3 MPG for the purposes of seeing what's better: Buy mid-level gas and try to save some money but lose commonly acknowledged 2 MPG by using a lower octane fuel, down to 15.3 MPG, and suffer performance; or buy the more Expensive but recommended Premium, and get 17.3 MPG.
I priced gas recently up here in the Northwest and Regular Plus was $3.59.9 a gallon while we were being soaked for Premium at $3.69.9 a gallon.
Now if an FJ driver bought $100 worth of Regular Plus @ $3.59.9, he would end up with 27.78 gallons of gas, and at 15.3 MPG, would be able to drive 425 miles. That equates out to .23 1/2 cents a mile.
But if an FJ driver bought $100 worth of Premium @ 3.69.9, he would end up with 27.03 galls of gas and at 17.3 MPG, would be able to drive 468 miles. That equates out to .21 cents a mile with the benefit of added horsepower and probably better operating conditions for that expensive engine.
If my numbers are right, it doesn't seem to make sense at all to run anything but Premium in the FJ's as in the end, you go more miles for less money.
Am I nuts or do you agree?
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Re:High octane fuel?
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Date: 2008/03/29 04:00
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By: mwhunter
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Status: User
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Karma: 0
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F.J.C.O. n00b
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I recently read where a company had finished a long term test with the FJ which ended with around 18,000+ miles on the odometer. "Combined" MPG during their driving came in at 17.3 MPG. I know that some people will be able to get 18-20, but for this post, let's stick with their 17.3 MPG for the purposes of seeing what's better: Buy mid-level gas and try to save some money but lose commonly acknowledged 2 MPG by using a lower octane fuel, down to 15.3 MPG, and suffer performance; or buy the more Expensive but recommended Premium, and get 17.3 MPG.
I priced gas recently up here in the Northwest and Regular Plus was $3.59.9 a gallon while we were being soaked for Premium at $3.69.9 a gallon.
Now if an FJ driver bought $100 worth of Regular Plus @ $3.59.9, he would end up with 27.78 gallons of gas, and at 15.3 MPG, would be able to drive 425 miles. That equates out to .23 1/2 cents a mile.
But if an FJ driver bought $100 worth of Premium @ 3.69.9, he would end up with 27.03 galls of gas and at 17.3 MPG, would be able to drive 468 miles. That equates out to .21 cents a mile with the benefit of added horsepower and probably better operating conditions for that expensive engine.
If my numbers are right, it doesn't seem to make sense at all to run anything but Premium in the FJ's as in the end, you go more miles for less money.
Am I nuts or do you agree?
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Re:High octane fuel?
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Date: 2008/03/29 07:01
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By: fjd08se
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Status: User
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Karma: 1
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F.J.C.O. Regular
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If your assumptions are right, there is no argument. Your calcs are right. But I'm not sure the assumptions are right. I agree with 17.3 mpg with 93 octane, because that's what I've gotten on average over the first 2000 miles. Now I'm trying 89 octane and so far I haven't seen the reduction in mileage you have assumed. Why would that be? I think it depends on how the truck is tuned at the factory, and for what kind of gas. I'll let you know how it goes.
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