Does putting different name brands of gas (i.e. Texaco,...

Answer by Michael Morris
Submitted on 4/18/2004
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There will be no problems associated with the use of different brands or types of gasoline (“regular”, “premium”, etc.) in the same vehicle. All gasoline sold in the U.S. is manufactured to specifications outlined by the ASTM (American Society for Testing and Materials- www.astm.org/). These standards, some of which are voluntary and some of which have been adopted as requirements by the EPA, assure that the end product of the refinery process is compatible with all gasoline engines and all other brands/types of gasoline meeting these standards. Gasoline that is not manufactured to these specifications (outside the U.S.) may cause some driveability issues such as difficult cold or hot starting and hesitation during acceleration, as well as engine maintenance problems associated with excessive combustion chamber deposits, oil dilution, and formation of acids and “sludge” in the engine crankcase leading to engine wear or bearing damage. Michael Morris, Emeritus Automotive Technology Department Southern Illinois University Carbondale

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Question by kim
Submitted on 12/3/2003
Related FAQ: Gasoline FAQ - Part 4 of 4
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Does putting different name brands of gas (i.e. Texaco, chevron, gate, kangaroo)in your vehicle at different times over a period of time, cause problems to your vehicle (maintenance)?

Answer by HARRY
Submitted on 3/31/2004
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NO I DON'T THINK IT MAKES ANY DIFFERENCE

Answer by performancecarowner
Submitted on 4/11/2004
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why doesn't it make a difference?

Answer by JGMagoo
Submitted on 1/19/2005
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An amazing scene is to stand outside your local gasoline refinery and watch the tanker trucks lined up to be filled with gasoline for delivery to their respective filling stations. They are all being filled out of the same nozzle from the same tank. The trucks will all have different brand names on them. Texaco, Conoco, Shell, etc.

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