whats your average gas mileage?

Years ago I remember the Mobil adds touting the same thing.
 
When I worked at gas stations, Mobil was the one to beat, I believe Shell was second. The Shell station near me has been rumored to let their tanks get low enough to let you pump water. Haven't heard it for a couple of years, but right before I was going to put their 91 (best I can get) I was told of 2 people that got water from their pumps. I put in Kwik Trip 89. Smog motor from late 70's don't worry about the corn %.
 
I am glad someone remembers the Mobil Detergent Gasoline adds with the washing machine full of suds. I asked Commando because I had heard a few years ago that all gasolines were really supplied by one huge supplier now and all companies buy from one huge pump and maybe add additives on their own. Could explain why ALL consumer gas is the same and sucks. I do remember in the 60's when gas smelled really good.
 
commando1 said:
Gas is cheap now and this thread has had me completely re-evaluating my needs.
I'm skipping the no-names and staying with top tiers now. Especially Shell.
When it goes to 4 bucks and I'm doing 15k mi a year again, I'll re-re-evaluate.
But, jeeze, Bhakim, stop letting those crackheads sit around the front door day and night. I know you need their lottery and cigarette business but.....
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The pan handlers being allowed to operate on property just infuriates me... I see the issue as pure laziness on the parts of the station and the the local PD. We ran them off as soon as they started harassing customers in my day, and the local PD would be down to back us up within 2 minutes if they didn't like it.

These days my normal as I walk from the store with a carton of cigarettes under my arm... "hey, can I borrow a cigarette" "I don't smoke"... never break stride or stop to watch them try to process the information.
Turboomni said:
Shell has the best pump gas? Why is that?
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I don't hold with the individual brand names as much as I would recommend staying away from the small places that double as a head shop... good or bad quality can happen anywhere, but is more likely to be bad in those cut rate and low volume businesses.
Turboomni said:
Well do you all think it's a waste of money and just run 87 unleaded instead of 93 unleaded?
I have never tried 87 but who knows, she may like it just fine.
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The owners manual that came with the car specified the minimum octane requirement, without modifications, you shouldn't need bigger octane and if using it you are running the wrong timing. Not that a couple octane points will matter much, but race fuel is a complete waste.
 
Almost all fuels are now "Top Tier", which usually relates to detergents and such, not octane. This level of execution in gasoline is necessary for newer vehicles emissions longevity. Even the major "off-brands" (locally as QuikTrip and RaceTrac) advertise "Top Tier" on their pumps.

There still are some unbranded fuels available, generally away from the larger metro areas or near marinas. A list is at gasbuddy.com, or similar.

There is also a map of what fuels are needed in which locales of the USA in the back of the Mobil website Ethanol'd fuels can be sold outside of these areas, if desired.

Locally, many of the WalMarts are re-vamping their Murphy USA fuel stations to now include "Non-Ethanol Fuel". It's about 30 cents/gallon more than normal E10. E10 is supposed to have a 6% fuel economy detriment when compared to E0. The old ReFormulatedGasoline was about 3% less, with about 5% ethanol and the balance of the 10% oxygenate as MTBE. So, using E0 rather than E10, considering fuel economy, might not be quite a "break-even" situation, financially, unless you figure in the long-term benefits of E0, if that matters.

Almost all gasoline is transported via pipelines to tank farms for distribution to local entities and then to the local fuel stations. When transported and received, it is ethanol-free gasoline. The ethanol is added at the fuel distribution location, as might the specific additive package for the respective brands.

It used to be that each of the major gasoline refiners had their own tanks and distribution network. Some still do, but others in non-metro locations probably still use the distribution terminal and contract transportation to the local stations.

I've also gravitated toward name brands of gasoline, some in particular and stayed away from others (for various reasons). In my newer cars, what I use tends to be what's least expensive at a chain store station.

Over the years, there has been a lot of marketing dialogue of which gasoline might be best. In the old days, our Chryslers liked certain brands best and didn't do so well on other brands. The '66 Newport 383 2bbl ran best on premium, although it was supposed to use regular, for example. AND, this can vary with region, too!

Gasoline? It's "all the same", but different.

CBODY67
 
In 1957, "premium grade" fuel had a Research Octane Number of 97. By the later 1960s, most name brands were closer to 100. Regular was about 93-95. Sub-Regular was 91 Research Octane Number. These are the reference numbers for the owner's manuals from up to about 1973. Past that time, when unleaded fuel came to be, and later catalytic converters, the Posted Octane Number was mentioned.

There are two methods of determining fuel octane. One is the "Research Method" and the other one is the "Motor Method". Research yields the highest anti-knock octane ratings. Motor, being a more severe test, yields lower anti-knock octane numbers. The "Posted Octane Number" on the pump (or "Pump Octane Number") is an average of the two methods. (R+M)/2. In general, PON+"4-5" yields Research Octane Number, if not exactly, pretty close. That makes the 93-94 PON equate to the prior 97-99 RON for Premium unleaded fuels. Add the lead back in, at about 4ppm (I believe) and it's back to 100 RON.

The "mid-grade" of 89PON would equate to the Regular gasoline of old times, on the lower part of the general scale of RON.

Back when we were doing good to find 91PON "premium unleaded), octane boosters were popular. There were some good ones that worked and others were just an alcohol additive of suspected improvements. None were really cost-effective for daily use, though.

Later, "premium unleaded" increased to 92, then 93PON. Back in 1974, in Lubbock, I could get Phillips66 FliteFuel Premium with a PON of . . . 95.5, which with a little lead still in it, should have been about 101 RON! But it, too, decreased as lead diminished and other factors became involved. It ran better in the '66 Newport, up there, than anything else, period. In DFW, it was the same as everything else, unfortunately.

I know some of this "consumer oriented" stuff can be a little confusing when cross-reefing it to a 1970 Owner's Manual fuel recommendation, but knowing WHICH numbers are being quoted is important.

CBODY67
 
CBODY67 said:
In 1957, "premium grade" fuel had a Research Octane Number of 97. By the later 1960s, most name brands were closer to 100. Regular was about 93-95. Sub-Regular was 91 Research Octane Number. These are the reference numbers for the owner's manuals from up to about 1973. Past that time, when unleaded fuel came to be, and later catalytic converters, the Posted Octane Number was mentioned.

There are two methods of determining fuel octane. One is the "Research Method" and the other one is the "Motor Method". Research yields the highest anti-knock octane ratings. Motor, being a more severe test, yields lower anti-knock octane numbers. The "Posted Octane Number" on the pump (or "Pump Octane Number") is an average of the two methods. (R+M)/2. In general, PON+"4-5" yields Research Octane Number, if not exactly, pretty close. That makes the 93-94 PON equate to the prior 97-99 RON for Premium unleaded fuels. Add the lead back in, at about 4ppm (I believe) and it's back to 100 RON.

The "mid-grade" of 89PON would equate to the Regular gasoline of old times, on the lower part of the general scale of RON.

Back when we were doing good to find 91PON "premium unleaded), octane boosters were popular. There were some good ones that worked and others were just an alcohol additive of suspected improvements. None were really cost-effective for daily use, though.

Later, "premium unleaded" increased to 92, then 93PON. Back in 1974, in Lubbock, I could get Phillips66 FliteFuel Premium with a PON of . . . 95.5, which with a little lead still in it, should have been about 101 RON! But it, too, decreased as lead diminished and other factors became involved. It ran better in the '66 Newport, up there, than anything else, period. In DFW, it was the same as everything else, unfortunately.

I know some of this "consumer oriented" stuff can be a little confusing when cross-reefing it to a 1970 Owner's Manual fuel recommendation, but knowing WHICH numbers are being quoted is important.

CBODY67
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CBODY67... since you have been assigned as my new BFF... I'm so glad I pretty much like whatever you have to say...:thumbsup:
 
polara71 said:
My first Polara with a 318 and 276 gears would get 18 on the highway on a good day. That was when the car was still my dad's with low miles.
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Now that I've put close to 600 miles on my 1970 Polara (318/904, just under 32k miles, no AC), I can talk about mileage. Over the past 300 miles, I have pretty consistently gotten about 10 mpg in the city and 15 mpg on the highway. The mileage may improve a bit as temps drop (pretty hot right now) and as I get more familiar with the car.
 
Until i get the correct tire size i have no idea what my mpgs are my speedometer is off by 5mph
 
I’m sure i’m getting less than 10 mpg around town. The car needs it’s, ahem, exercise.
 
When I got my 1965 Chrysler w/ 383 and 2-barrel Stromberg in 1991, it gave 18 mpg hwy. Speed limits were lower then ~60 mph, which makes a big difference. At the 75 mph people tend to drive now, maybe 30% less mileage. I later changed to a Holley Pro-jection TBI, but mileage didn't improve and that thing was always quirky, even w/ O2 feedback. I am in the process of converting to a better Commander 950 w/ Offy dual-port intake, and wideband O2, so will be interested. Conceivably, one could get 25 mpg hwy, based on what 1995 Cadillacs w/ Northstar V-8 got, due to better fuel and spark controls, but only if you drive wisely.
 
I get anywhere from 9.5 to 12.3 MPG. No where out of here is flat, mountain passes in every direction. But then, I do have 450 horses at my command...;-)
 
We had a 71 New Yorker when I was a kid in the mid 80s. It would get 17 on the highway. 440 carter Avs, unknown gear ratio.
 
ok 35+ plus years ago when I was driving my polara I was getting 10mpg in town and on a good day it would get 12mpg on the turnpike. fast forward 35 years I am anxious to see what I get on it with the engine completely rebuilt but with a few upgrades (more HP) but all joking aside I really don't care what mpg's I get as I just enjoy riding/driving it around a seeing the smiles I put on peoples faces and knowing that I own one of the best cars ever built. OOPS forgot to say what I have for engine ect... 440 HP+ , 727A 3.23 gears magnaflow mufflers 3inch piping.
 
I like those numbers! Should be a fun one, just need to plan your stops accordingly on long journeys!
 
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