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7th Generation (1993-1997) Specific discussion of the 7th generation

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Old 10-26-2011, 03:19 AM   #1 (permalink)
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Mixing gas bad ?

I always wondered if mixing gas like gasing in one station than going to a different station for gas was bad?
Is all gas in thr stations the same?
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Old 10-26-2011, 05:38 AM   #2 (permalink)
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Quote:
Originally Posted by Bstylz View Post
I always wondered if mixing gas like gasing in one station than going to a different station for gas was bad?
Is all gas in thr stations the same?
Gas stations use different additives in most cases, but there is nothing wrong with mixing stations, or even octane ratings.

If you mix 93 and 87 you get 90, mix 89 and 93 you get 91.
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Old 10-26-2011, 06:09 AM   #3 (permalink)
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Doesn't seem to be a problem mixing ethanol (like 10%) with 100% gas either. You may not want to mix regular with premium if your car calls for premium but even that is probably OK on newer cars. I've read the ECU ( thru knock sensors) will adjust the timing to prevent 'knocking'. Nor would you want to mix a higher ethanol percentage than your system is designed to handle. (Personally I try to avoid all ethanol, it seems to lower my gas mileage- 28-29MPG highway with 10% ethanol vs 31MPG with 100% gas.)
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Old 10-26-2011, 10:56 AM   #4 (permalink)
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So would you guys say that it doesn't matter what gas station you gas from? Cause I've been gasing from chevron my whole life but if it doesn't matter than I'm going to gas from the cheapest station.
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Old 10-26-2011, 05:46 PM   #5 (permalink)
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Originally Posted by Bstylz View Post
So would you guys say that it doesn't matter what gas station you gas from? Cause I've been gasing from chevron my whole life but if it doesn't matter than I'm going to gas from the cheapest station.
It matters. Of course it matters. Its the same thing as using quaker state and a fram filter for an oil change versus royal purple and a K&N filter.

I have consistently better mileage from the better quality gasoline vendors. Chevron is on of the ones listed in the top tier list.

BUT.... since our cars were NOT designed for methanol/ethanol use, avoid it! The alcohols do affect rubber seals and plastic parts in our fuel systems. A little is OK but continued use can lead to problems.

YES your mileage will go down with e-85, since alcohols have a lower BTU value than gasoline, so its less efficient in a gasoline engine.

Yes they all mix together with no problem.

-SP
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Old 10-26-2011, 06:12 PM   #6 (permalink)
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Generic gas stations (and many big name brand ones) get their gas from a local distributor. I know people like to get hooked on a brand name, but anybody who actually believes that each business gets a special formulation is severely misinformed. Our local distribution service fills stations all over the city and the gas comes out of two huge storage tanks filled via a pipeline.

This might be like that "Toyota oil" that some go to the dealer to get.
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Old 10-26-2011, 06:49 PM   #7 (permalink)
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Mix to your hearts content.
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Old 10-26-2011, 07:16 PM   #8 (permalink)
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Originally Posted by speedy25 View Post
It matters. Of course it matters. Its the same thing as using quaker state and a fram filter for an oil change versus royal purple and a K&N filter.

I have consistently better mileage from the better quality gasoline vendors. Chevron is on of the ones listed in the top tier list.

BUT.... since our cars were NOT designed for methanol/ethanol use, avoid it! The alcohols do affect rubber seals and plastic parts in our fuel systems. A little is OK but continued use can lead to problems.

YES your mileage will go down with e-85, since alcohols have a lower BTU value than gasoline, so its less efficient in a gasoline engine.

Yes they all mix together with no problem.

-SP
Are you saying don't use chefron gas ?
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Old 10-27-2011, 03:17 AM   #9 (permalink)
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^He says Chevron is listed as one of the better brands. But as Zembonez stated, gas is typically pumped and stored by grade (with some mixing) thru the same pipes and tanks all over the country. There may be additives put in at some point which may be a bit different from one station brand to the next but they simply don't keep one brand of gas separate from another brand while shipping and storing. The may be exceptions I'm unaware of but most gas is refined, shipped and stored by various companies which provides the same fuel to service stations which sell to you. (That doesn't mean regular, premium, ethanol, etc are all the same as each other but the regular you buy at one station will probably be the same regular as what you buy from another.) Maybe some companies mix in additives/detergents or whatever and some stations may have problems with water in their tanks or such that may not get corrected as quickly at (for instance) an old, independent station as it is at a large name brand station, but I believe by and large, the name of the station doesn't mean much.
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Old 10-27-2011, 01:14 PM   #10 (permalink)
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Originally Posted by Dave's View Post
^He says Chevron is listed as one of the better brands. But as Zembonez stated, gas is typically pumped and stored by grade (with some mixing) thru the same pipes and tanks all over the country. There may be additives put in at some point which may be a bit different from one station brand to the next but they simply don't keep one brand of gas separate from another brand while shipping and storing. The may be exceptions I'm unaware of but most gas is refined, shipped and stored by various companies which provides the same fuel to service stations which sell to you. (That doesn't mean regular, premium, ethanol, etc are all the same as each other but the regular you buy at one station will probably be the same regular as what you buy from another.) Maybe some companies mix in additives/detergents or whatever and some stations may have problems with water in their tanks or such that may not get corrected as quickly at (for instance) an old, independent station as it is at a large name brand station, but I believe by and large, the name of the station doesn't mean much.
Thnk you but I still didn't get an answer lmao.

Example
Can I gas up at chevron than gas up at a shell gas station?
Would it hurt the car at any way?
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Old 10-27-2011, 06:52 PM   #11 (permalink)
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No!

-sp

Edit: Ooops! I thought of a way it could screw it up. If you fill your car with DIESEL at the other station. Yes its a good laugh, and it HAS been done.

Last edited by speedy25; 10-27-2011 at 06:59 PM.
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Old 10-27-2011, 06:57 PM   #12 (permalink)
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Daves-

Yes its true that a LOT of the "budget' stations get all the same gas so it doesnt matter much for them, but the better refiners have their own fleet and tank farms to supply THEIR stations.

When Shell actually had stations in my area, you NEVER saw a SOCI tanker dropping gas. It was always a shell tanker. SOCI supplies everything that isnt a Marathon in my area. I think they are out of Wooster. There also used to be a Sunoco distribution place near where I am working now. Maybe it time to take a visit and try for some more inside info.

-SP
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Old 10-27-2011, 07:01 PM   #13 (permalink)
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For the most part, gas is gas (to the average consumer). You won't hurt your car going from one station to another, or mixing octane ratings (it's always best to go with what your owner's manual states). Switching between 10% ethanol and 0% ethanol isn't a big deal either, and neither is 85% ethanol and 0% ethanol for cars/trucks that are Flex Fuel capable.
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Old 10-27-2011, 09:44 PM   #14 (permalink)
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Quote:
Originally Posted by bstylz View Post
can i gas up at chevron than gas up at a shell gas station?
Yes.

Quote:
would it hurt the car at any way?
No.

There aren't any additives in one brand's gasoline that would be incompatible with another brand's gasoline. There are small quality differences, but not compatibility differences. Class-action lawsuits would abound if switching fuel brand alone caused problems. There are plenty of everyday situations where it's not even remotely possible to buy the same brand at every fillup.
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Old 10-30-2011, 02:03 PM   #15 (permalink)
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Quote:
Originally Posted by speedy25 View Post
No!

-sp

Edit: Ooops! I thought of a way it could screw it up. If you fill your car with DIESEL at the other station. Yes its a good laugh, and it HAS been done.
lol. some guy towed his '09 Camry to our shop the other day and said "i filled up and as i was getting on to the high way it just shut off. i tried to start it and it wouldnt so i just had it towed here." so we pushed it into my bay and i messed with it a little while you know going through the basics and finally figured out that he had filled it with diesel fuel. aroind here diesel pumps have different nozzles that are bigger then regular gasoline nozzles to prevent this from happening but this guy forced it in there. do people not realize that if the nozzle doesnt fit that that fuel is probably not meant for your car? lmfao
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