posted by
someone claiming to be volvovlov
on
Thu Feb 27 15:53 CST 2003 [ RELATED]
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I obviously have waaaaay too much time on my hands.
Is my math correct?
You can have an increase of 3mpg in one month -
all you have to do is find cheaper gas than you bought last month..
If the cost of gas increases from $1.60/gal to $2.20/gal
what is the equivalent loss in MPG? Is almost 3mpg correct?
[as the price of gas increases it's the same as if you get lower mpg]
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If you use premium @ $2.30/gal vs regular @ $2.00/gal
the cost difference per yr is $300 (assuming 12,000 mi per year)
The cost of replacing turbo is ????
It looks like premium gas at a premium price is cheap insurance.
-----IS this correct?-------or should I get back to drinkin beer ---------
-------------and watching 'gilligans island' reruns ----------
assuming your mileage is 20MPG and only the cost of gas changes:
at $1.60 per gal @20mpg = 12.00mpg
at $ 1.70 per gal @ 20mpg = 11.76mpg (a loss of .24mpg)
at $ 1.90 per gal @ 20mpg= 10.53mpg (a loss of 1.47mpg)
at $ 2.00 per gal @20mpg= 10 mpg (a loss of 2 mpg)
at $ 2.10 per gal@ 20mpg= 9.54 mpg ( a loss of 2.46 mpg)
at $ 2.20 per gal@ 20mpg= 9.09 mpg ( loss of 2.91mpg)
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if you travel 12,000 mi per yr, gas is $2.00 per gall = $2,000 yr
if you travel 12,000 mi per yr, gas is $2.30 per gall = $2,300 yr
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difference between using regular and premium is = $300 /year
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What a Stupid Post - LITERALLY!
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You are missing way to many beers while trying to figure this out. It is for sure a 6 pack job.
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posted by
someone claiming to be harddriver
on
Fri Feb 28 04:59 CST 2003 [ RELATED]
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Your post is a bit hard to understand with
all the relative comparisons.
If you are a real good american,
and you want to save money,
and you want to cut the mullahs from the oilmoney,
and you want to reduce your bulge by excercising -
buy a bicycle and use it ! Seriously!
You'll save double: Less gas for the car and
you can quit the gym - payments.
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Driver...Great advice, but not all of us live where we can safely ride...I moved to Tampa after living in Suburban NY and the Mountains of New Mexico both places where I was able to cycle extensively, on the order of 100+ miles per week...now i live in an ideal climate...but can't ride on the streets! Worst drivers I've ever seen (elderly, drunks, young, tourists) AND no shoulders on roads..have had 4 cycling friends hit by cars in the past 2 years..(experienced adults) two killed...so relegated to (UGH!) bike trails on weekends...just a comment -Dee Jay
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I think you've had TOO MUCH beer VLOV..Premium gasoline WILL NOT increase mileage, and is only useful to prevent detonation due to timing, etc...it's useless to use a grade of fuel higher than what is required...By the way...I recommend Anchor Steam, if you can find it, and definitely prefer Mary Ann to Ginger....Dennis
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That's wrong. I don't know where you get you premium or where you live, but premium fuel burns more evenly and delivers more kinetic energy per volume, thus proving more efficient and returning abour 3mpg more than regular.
Additionally, you should read some posts from the previous thread (including mine) on what happens with regular. Pre-detonation and knocking = retarding = leaning = you use more gas than necessary. ALl of which leads up to massive use of regular gas where premium wouldn't have that problem. Rememeber, turbos operate under compression.
-rt
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posted by
someone claiming to be Dharvey
on
Fri Feb 28 14:08 CST 2003 [ RELATED]
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Or to put it another way--the b230f is timed and compression-ratioed for 91 (M + O) / 2 octane gas, which means, premium. At least that's what the Good Book says. If you run regular, it will start knocking and the knock sensor/ECU will retard timing and enrich the mixture to limit the knock. More gas = reduced mileage.
The intersting part that Mr. Volvovlov doesn't quite get to is that as the absolute price of gas increases (like it's doing right now) the *relative* "premium" of premium gas decreases (it's always run around, oh, 16c to 20c a gallon difference wherever I've been, no matter what the absolute price was.)
In other words, the more expensive gas is, the better a buy premium gas is. The only way to know for sure which is more economical is to check how much you mileage increases when you run 100% premium vs. 100% regular, and figure the cost per mile each way.
Except that unless the knock sensor totally damps out the knock, you'll be damaging your engine on regular. You'll have to decide how heavily to weigh the value of possible engine damage.
Happy motoring.
Doug Harvey
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I'm not sure I want to argue but I get about the same mileage on regular as premium and don't notice any performance increase or anything - what's up with that?
Ron
87 745
227000 km
Ont Can
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Because you're using the 'proper' fuel for your engine...see my earlier post..and will re-state...there is NO performance advantage to employing a fuel with higher octane than required...that said, high compression Volvo engines require higher octanes...my B230 ('89 244) gets on swimmingly with 89 (research Method), and has for 150,000 miles...Reep Rolling...Dee Jay
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Yes, you DO have too much time on your hands. Usually when I bring up this type of conversation, my wife just roles her eyes, and says something like, "Of course it makes sense, honey." Somehow, it's comforting to know I'm not the only one who sits around thinking of such things.
For what it's worth, I think your logic is "logical".
Jeff Pierce
--
'92 Mercedes 190E (my daily driver), '93 945 Turbo (a kickass family car), '53 Willys-Overland Pickup (my snow-plow truck/conversation piece)
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you're leaving out an important number:
your ACTUAL gas mileage
--
Kenric Tam
1990 Volvo 740 base sedan (B230F)
My Volvo 'Project'
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