.

I use either Shell or Exxon premium (93 octane) gas, even I told dealer at the time of pickup to premium gas which they did.


I am curious, does it hurt to put fuel injectors like Chevron Techron or Seafoam, etc.

You might have saved in cost of your fillups, but the drop in efficiency would offset the savings.

Given that you posted about a cost difference of $0.60-0.80 per gallon between regular and premium, your situation is the exception and not the norm. I did some quick math:

94000 miles, $2500 gas cost savings.
At price difference of $0.60 per gallon as you mentioned, you've consumed around 4166 gallons for an average MPG of around 22.56.
Not sure what type of driving you're doing, but if it's mostly highway then that mileage really sucks.

All the gas stations in my area that have high turnover all have a spread of about $0.10 between each of the grades (87/89/91).

I'm waiting for the day when car manufacturers run out of ways to make the cars more efficient with existing fuel supplies, and start forcing the fuel industry to provide the public with 95+ octane or higher gasoline on a consistent basis. Economies of scale will reduce the cost, and we can all benefit from more power + better fuel economy.

Bring a trunk full of additives on the way back?

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It shows 31 on my car now for mpg. I can get about 33-34 on straight highway but I have a heavy foot. I do a good mix of highway driving. I can’t detect any knocking.

The problem is that this is an economic question, not a policy question.

CA mandates 91 octane as minimum for premium. It's up to the market to offer whatever that meets that spec (and usually the market will only offer the minimum spec).

I've been in states where advertised premium was 90 octane. That's a far worse deal than what we have here.

https://en.wikipedia.org/wiki/U.S._S...tane_Standards

Then either your cost estimation is way off, or your dash gauge is way off.

94000 miles. 30 mpg, 0.80 difference. About $2500.

93 octane, WOT, 80000 smiles to the gallon, and just when you think she will yell the safe word she looks over her shoulder and screams harder daddy!

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...I use diesel... much torque, so efficient, such wow!

I can't believe I read this whole thread - :eyebulge:

I just fill up with the most expensive gasoline the station has to offer - :iono:


humfrz

Only 93 for me. Costs about $5 more to fill up. But I only fill up once every 2.5-3 weeks. So the additional cost is almost non existent.



Don

I still use 93, but my driving habits have changed and so has my MPG! I manually calculate MPG, I don't look at the MPG meter in the gauges display.

I used to do mostly highway, and when my car was stock, I got 31 MPG. Then I did intake, exhaust and tune and my MPG went down to 28. Then I got MPSS and the sticky shoes brought me down to 26 MPG.

Now I do a cold start and drive 3 miles in the AM. Then I do a cold start and drive 3 miles in the PM. This happens 4 times a week. All city. Once a week I get it warmed up on the highway for 30 mins or so. My MPG has tanked to around 20. Ugh. But I drive a hell of a lot less and I fill up about 3 times less often.

You're not the only one... I want my time reimbursed...LOL

Have you ever tried Jet fuel? Can't hardly keep the car on the ground it goes so fast!!:burnrubber:

I would, but you have to tune for that.... Think I'd rather the Mr Fusion conversion... so much more potential and don't think you need to mess with tuning.

Ethanol is good for high compression engines. It burns cooler and reduces knock. I wouldn't put 91 non-ethanol unless I was storing the car for winter/extended period of time. People with only 91 can safely mix 2-3 gallons of E85 to increase the octane.

The best to worst:
93 10% ethanol
91 10% ethanol
91 0% ethanol

I'll let you guys in on a little secret. Jet fuel is just Kerosene, slightly more refined, and has the shit taxed out of it. I'm pretty sure a cheap turbine with looser tolerances could run on straight kerosene... If you can keep it on the ground you'll never have to worry about falling out of the sky.

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So, THAT'S why my heater took off - :eyebulge:


humfrz

No secret. :lol:

Diesel<Kerosene<Jet Fuel We run our our tractor on Jet. Kerosene heaters work great on Jet. it will make your can shit the bed!

You beat me to it!

I don't think that's true. I drive all over Florida. The statutory minimum here is 91. All top tier stations sell 93, and it's rare to find an off-brand that doesn't have it. I suspect it's the same in most states where there's a statutory minimum. I also frequently drive in several states that have no statutory minimum, and I have no problem finding 93 there either. If the market usually moves to the minimum octane, these states should be offering 90 or 91 and calling it premium. They don't.

California gets 91 because your idiot government banned certain octane boosters, making 93 more expensive to produce. Meanwhile, most of your gas comes from a single pipeline owned by Kinder Morgan, which colluded with the distributors to provide only 91 at the lower cost and stop shipping higher octane gas. If there were competition offering 93, Kinder Morgan would have to offer it also to compete. Lucky them that they don't have to.

In Florida we don't have your regulatory overreach, so the cost to produce 93 wasn't unnaturally raised for our suppliers. And our gas arrives by ship into multiple ports from a variety of suppliers rather than just one effective monopoly. Out here in America we still have competition, so most stations provide 93 to compete.

Been to casinos in ok and their highest grade is 89.

Just like the Chrysler Turbine, can run on anything.

Nobody has mentioned the ‘chirping’ people were getting from the twins when using ethanol fuel. Maybe they have since fixed that problem.

I went out of my way to find a gas station with premium (92) non-ethanol fuel specifically to avoid this. Had to get a special gas card to use the station. All the cops in my county use that gas station, lulz

Never had any issues or chirping in the 6 years I’ve had the car! Woo!

Value spring issue though... time to trade up for a Subaru!

Well, one fine first post!

What can I say, I like the tach needle to be erect. Plus, burning it up as quickly as possible keeps it fresh.

Do you hang out in a missile silo?

Is it the same for Arizon and Nevada? Cuz they got the same 91

https://www.reactiongifs.us/wp-conte...an_fillion.gif

I'm speechless.

:lol:



humfrz

I don't know how you did that but that is not a quote of anything I said.

Eventually OP will break a ring land and bitch and moan on the forum about what a shit design the engine is.

LOL. Sloppy editing. Apparently there was something of yours I wanted to respond to also, and I had you multi-quoted with Mav. Now I can't figure out what post of yours I quoted.

The one where I said that the rated octane may not always be correct at low volume stations.

The same Kinder Morgan pipeline that supplies all of California runs from west Texas through New Mexico and Arizona, supplying those states as well. A spur from that pipeline shoots off from southern California to Las Vegas, and another spur supplies Reno. Since most of the western states are landlocked and mostly rural, you don't get a lot of choices.

The northeastern part of Nevada is supplied from Utah, so I don't know what the dynamic is there. Depending on the elevation, they may not even need 93, since the thinner air at higher elevations makes knock less likely.

Kinder Morgan also has another pipeline that starts in Louisiana and runs through the southeast up the east coast. The difference there is that there are ports within a few hundred miles of the pipeline all up the coast. So if Kinder Morgan tried that shit over this way, another supplier would step up. So they don't. But they don't have to do that anyway, because we don't have the idiotic environmental regulations unnecessarily pushing up the cost of production.

I get better mpg and after a half tank or so the car runs smoother and the butt dyno says it pulls stronger on long uphills.

The cost difference is the same here, even more significant if non ethanol is available, that can be as much as $1/gal difference. Sometimes it is painful to see an $8-10 difference when you fill up. At 35k/yr it adds up.

If that's the case then why do I get better mpg and why does the car run cooler on non ethanol fuel? It might be because our fuel pump runs cooler on non e fuel so it is more efficient. For straight interstate running 10% ethanol does give me slightly better mileage but for twisty, hilly back roads with small towns mixed in non e is far superior.

Butt dyno = confirmation bias. Confirmation bias should always be considered suspect.

Nobody wants to be wrong, so we presuppose we are right. Basically what your confirmation biased butt dyno tells you is that because you presuppose that your decision was right, your brain interprets what your senses give it as support for that decision, to make you continue to feel good about that choice. That's not to say your choice was wrong, only that the way your asshole puckers isn't legitimate support for your conclusions.

It's perfectly all right to feel good about your decision if it works for you. However, don't get upset if other people don't trust your anus.

BTW, I have used non-ethanol in mine. My anus did not pucker any differently. So my butt dyno contradicts yours.

That placebo effect though.
If only there was some sort of measuring instrument by which to compare the output between two differing setups. Oh, wait.

Techron is just Chevron’s brand name for their suite of cleaner additives, and that virtually every commercial gas company adds, to a greater or lesser degree, additives that align with what Techron does.