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Gas Station quality comparison/info

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  • #16
    I put in a full bottle of the chevron techron fuel injector cleaner with about 3 gallons of gas in the tank and drove it as far as I could before filling up again. I also got a k&N stock replacement filter a few month ago. Anyway within the last month or so my mileage went up from about 300miles max to about 350miles. That ended up coming out 29.something mpg.

    BTW normaly I use 76 gas and get the lowest octane. I filled up at kroger the other day and had to fill up at 315 miles tonight. The thing is I don't rev my motor. Maybe once a tank and I do mostly highway.

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    • #17
      ugh but when do you fill up and how many gallons did you fill, was it consistent.. theres a least 2gallons left when my gas light is steady and bright
      autozone online repair manual
      http://www.autozone.com/addVehicleId...leSelected.htm

      supplement with haynes manual from pep boys (<$15). includes vital troubleshooting and maintenence schedules.

      pics of all gsr rims

      b-series dynos

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      • #18
        Originally posted by TR90LS
        Maybe you guys don't notice a difference because there isn't one.
        I don't know much about gas but I do know that I used to work across from a few gas stations and more than a few times, the same generic gas truck would go hook up at Texaco and then stop at amaco and I've seen the same trucks at a BP out here too.



        this is very wrong about not being a difference. and is a common misconception. refineries are owned by different companies and are what makes the various types of fuel. hence, the refining process. there are not as many refineries as you think there are. example: shell/texaco have a refinery in baton rouge that serves the whole southeast. its products only go to that region. there is a second refinery that is in houston, its products go to the midwest and southwest. the los angeles refinery makes a special formulated gasoline for california. its products stay there. the anacortes refinery is for western canada and the pac-west area of the US. thats how many companies are setup. its about distribution, getting your product to your market with the most efficiency. refineries have always been located where they are accessible to ports or pipelines, and then their market place.

        not all gasoline is equal. each company uses their own additive. i know, i have seen the tests and the results. they all get their base product (crude) from overseas or in the US. (sinclair oil, which my dad is now vp of, gets crude from only the US, not the mideast) the number one gasoline additive is chevron, the second is texaco/shell (they are the same company until the chevron/texaco deal in 2004), the third is bp/amaco, mobil/exxon takes up the bottom of the big companies. since, i am now familiar with sinclair, they are working on a new formula that will rival shells. not bad for a private oil company.
        i learned alot about this because my dad headed up the fuel venture side of enron for 20 years. and i have seen the different test results of motors run on the different fuels. for a long time texaco system3 was top and used some of the techron technology. then shell took over texaco. these three top gasolines used on a motor for 50k miles. the injectors, the valves, piston chambers, etc. were very clean, no crud at all. the same cannot be said about lesser gasolines like mobil/exxon and those local places that are always cheaper. its worth spending the extra 2 cents. how much are you really saving in the long run?? to me, i want the best for my car, so use it. another point, you never want to fill up when the fuel truck is getting there, you are getting the bottom of the tanks...kinda like drinking from the bottom of the coffee pot. and there are, with any manufacturing process, inconsistencies. like texaco use to say, give it 5 tanks to thoroughly clean the motor up. (my uncle was on the team that developed system3 in the 80's and became vp of refining for texaco).



        i do have to ask, how is a gasoline harmful to injectors?

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        • #19
          hm i guess ill try switching to texaco/shell for a while.. what about 76?

          oh and as far as comparing additives and quality, is this assuming only the premium or all 3?
          autozone online repair manual
          http://www.autozone.com/addVehicleId...leSelected.htm

          supplement with haynes manual from pep boys (<$15). includes vital troubleshooting and maintenence schedules.

          pics of all gsr rims

          b-series dynos

          Comment


          • #20
            additive and quality is compared across the board. i don't know much about 76, isn't that in cal only? you'll be good with shell.

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            • #21
              Originally posted by XDEep
              ugh but when do you fill up and how many gallons did you fill, was it consistent.. theres a least 2gallons left when my gas light is steady and bright
              yes, your car gives you 2 gallons when the light turns on, according to the owner's manual. so, you know you have 40-60 miles on the highway to get some more. i would rather have a greater reserve, then be given 10 miles left over.

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              • #22
                Originally posted by texnteg
                additive and quality is compared across the board. i don't know much about 76, isn't that in cal only? you'll be good with shell.
                around here shell is hte WORST gas u can get...they are FAMOUS for diluting it with water (of course, problems came up...) but I heard it's still really bad
                MANGO POWER!!!


                sigpic


                It is MY CREATION.

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                • #23
                  damn, they would have had huge fines slapped on them if they were diluting. royal-dutch shell is a very respected company. i am suprised. it may have been the operator of the station doing that, trying to make a little extra money. unless it was all of BC. i'm gonna have to find out more about that.

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                  • #24
                    ARCHIVETHIS

                    texnteg thats some good info

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                    • #25
                      texnteg, any info on all this water diluting business? was this a past issue thats subsided? even as a kid i remember people complaining about arco doing the same so avoid at all costs.. are laws stricter now? whats the likelyhood of coming across one, and how can you tell?
                      autozone online repair manual
                      http://www.autozone.com/addVehicleId...leSelected.htm

                      supplement with haynes manual from pep boys (<$15). includes vital troubleshooting and maintenence schedules.

                      pics of all gsr rims

                      b-series dynos

                      Comment


                      • #26
                        i talked to my dad this morning about the whole diluting thing. he said it is a very bad business practice and is not always done by the larger companies. see, in many places the stations are not owned by the company. they are owned by retailers who pay to have the brand name on the sign and the gasoline in the tanks. well, they are out to make a few bucks too. i remember some texaco retailers were getting their fuel from a cheaper company(exxon, amaco...) and my uncle found out. those retailers were out of business. cause they were using the texaco label on an inferior product. it would be like honda selling parts to you that are ford parts labeled as honda. kinda.

                        anyways, the gasoline diluted with water is a big problem for your motor. the reason why they did this was so that they could buy the same amount of product but sell a little more. you can see why that is a bad business ethics. it gives the consumers problems and the company a bad reputation. he doesn't know too much about the whole shell problem in british columbia that max was talking about. because, well... he has never dealt with canada. i'm sure, if there was public awareness and then government awareness, and it was shell diluting. there were nice fines to pay and maybe a few court dates.

                        you really cannot tell if there is water in gasoline when your pumping it, once its already in your car. cause, it won't run right. and then the best thing is to run that tank dry. our first freeze we ever had in houston, we got moisture into the gas tank of one of the cutlasses. because the tank was half-full and the car was outside. the car was running bad and stumbled. we had the whole tank drained and ran some type of anti-moisture fuel additive. i guess they sell it at local auto parts stores. anyways, there isn't much you can do and i don't know the long-term affects of getting moisture in your vehicle. but, if you get water mixed with gasoline in your car. your still burning and there is an igniting going on. so, the water just flows and turns to steam. you just have to get it out of that tank. so, yes its a problem...but it can be remedied.
                        its really more of a business ethics problem. they know they are cheating the customer for an extra buck. its not something to be paranoid about when your filling up. it seems to be a very rare problem.

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                        • #27
                          true.. ya that stuff is called HEET fuel line anti-freeze (99cents at pep boys). really helps with emissions, as stated in my 'how to pass smog' tip.
                          autozone online repair manual
                          http://www.autozone.com/addVehicleId...leSelected.htm

                          supplement with haynes manual from pep boys (<$15). includes vital troubleshooting and maintenence schedules.

                          pics of all gsr rims

                          b-series dynos

                          Comment


                          • #28
                            yeah it was something like that. in fact, we are having another snowstorm(into the single digits) about to roll in, so i think i may pick some up or take the car home and let it be garaged.

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                            • #29
                              Glad I'm not the only one! I've been using Chevron for years on my teg and had good gas mileage. Some reason this past month it dropped quite a few; thinking it was a bad O2 Sensor or something. But then I tried filling up with Shell for the first time and now I get the great mileage again.

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                              • #30
                                they do add stuff to gasoline in the winter time don't they?

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