V6 and premium fuel

CJ3Flyr

CJ3Flyr

Super Moderator
I know there have been many threads on the plusses and minuses of running premium fuel. I found this one and thought it interesting especially this part:
 
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drmorbius said:
Premium fuel is cleaner because it has to go through more processing. It's filtered at each stage . More stages = more filtering= cleaner fuel.
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I would love to see some proof to back up that statement. The octane rating of a fuel can be altered by several different processes. Usually it is either refined to the desired value or enhanced with additives. The refining process is very costly, so that's why most gasoline companies just use additives. Don't get caught up in all the advertisements that lead you to believe that your car needs the highest octane gasoline. Most automobiles built today will run great on 87 and above and most gas brand have the same amount of detergent rather its 87 or 93 octance, with the exception of Shell and few others.
 
Boston_Runner said:
I would love to see some proof to back up that statement. The octane rating of a fuel can be altered by several different processes. Usually it is either refined to the desired value or enhanced with additives. The refining process is very costly, so that's why most gasoline companies just use additives. Don't get caught up in all the advertisements that lead you to believe that your car needs the highest octane gasoline. Most automobiles built today will run great on 87 and above and most gas brand have the same amount of detergent rather its 87 or 93 octance, with the exception of Shell and few others.
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I would wager that it doesn't even cost much more, if anything, to make "premium fuel". Its just a way to sucker people into buying it (I can't prove this, though). You only need high octane fuel in most cases if you run forced aspiration (turbo, SC) to avoid detonation. Knock sensors take care of this for engines like 1GR-FE and 2UZ-FE just fine, with little or no loss of power that anyone can really notice. I, for one, won't waste my money on high octane fuel unless I felt my truck was running poorly and I did every other possible thing before switching fuel grades first.
 
CJ3Flyr said:
..in the range of Prado petrol engines, the rate of ignition advance is very slow..

I am going to give it a try, hmmm 4000km is about 2400 miles? I
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I agree about running good fuel . I always run 87 in my V8 and never had a problem at all runs smooth as glass and naturally the V8 goes like all xxxx . I feel premium is a waste .

Unfortunately the link Koz posted about top fuels ............. we have none of those stations here. I 99% of the time get Mobile from a friends station.
 
The old Amoco Premium (that is sold at BP stations) is also a high quality fuel, but it's premium at a high price.

Koz
 
Falls said:
Unfortunately the link Koz posted about top fuels ............. we have none of those stations here. I 99% of the time get Mobile from a friends station.
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Mobil/Exxon used to be toptier a few years ago, but decided not to force their franchise owners into guying only Mobil/Exxon gasoline which dropped them from this listing. Now they can buy from anyone and charge the higher price because people think they are toptier. I find a gas station and get to know the owner and find out his standards, then decide to buy regularly from them if it's not toptier.
 
Does anyone have a Casey's General Store near them? I was wondering why their fuel is the same price, regular and premium are the exact same.

Evan
 
Shell has one of the best premium gas out there, they are one of the few gas companies that actually use more detergent on their premium garde, but putting in a bottle of Techron every oil change is the cheaper way to go.
 
boston_kevin said:
Mobil/Exxon used to be toptier a few years ago, but decided not to force their franchise owners into guying only Mobil/Exxon gasoline which dropped them from this listing. Now they can buy from anyone and charge the higher price because people think they are toptier. I find a gas station and get to know the owner and find out his standards, then decide to buy regularly from them if it's not toptier.
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So its Mobile that I get , but may not actually be using Mobile fuel ? correct ?? So they basically use the franchise name ( Mobile , BP , Citgo , Clark ,) but can buy generic fuel which all come from the same tank ?
 
Boston_Runner said:
Most automobiles built today will run great on 87 and above and most gas brand have the same amount of detergent rather its 87 or 93 octance, with the exception of Shell and few others.
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are you saying shell does not add additives?
 
Re: Re: V6 and premium fuel

JB. said:
Go for it. I'm too cheap to do the test but I can't wait to find out what happens. Please post back when the time comes, but, for now, get out there and drive!:driving:
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I am a driving fool so I should have some good #'s soon. The first half-tank was actually a bit of a reduction in mpg from my normal calculator calculated, stuffed filler neck 18.1-18.5mpg. I haven't fueled again yet but based on trip meter and gas needle position it may be doing better. It certainly seems as though it'll be at least equal to the 87 octane.

I understand it takes significantly more data than I have so far to conclude anything...

What I have noticed (and it began within a few miles) is an incredibly subjective thing but I swear it idles a touch smoother. :bigok:
 
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