Thread: gas
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Old 05-08-2012, 09:43 AM
Asur Asur is offline
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Unless you have a programmer that will change the way your engine will use the Diff grade fuel, It wont change anything, if you put higher octane fuel in your truck, the engine will knock, the ecu will then change the engine timing so as not to knock (ping), basically putting it in a position that will be just like running mid grade fuel. Now if you have a programmer, then that's different. Most Vehicles are made to run on 82 octane fuel, but you will never see that at the pump, ecu adjusts your engine for the ultimate fuel burning. Your vehicle's recommended octane is noted in the owner's manual and again unless you have your truck chipped, or have a programmer, then you will only be putting more money out for the same amount of fuel, you might see a very minute difference, but by the time you calculate your cost and that difference, you will see it just not worth it. That being said, putting higher Octane fuel will not hurt your engine since the ECU will adapt the Burning of that fuel as per what the sensors are sending back to it till it hears no more knocking. High Octane fuels will normally be seen in 10 cyl engines and up, some 8 cyl that are setup as high performance will also, but you will see the fuel Octane specifications in the manual at that point. If you chip your truck, add high flow everything on it, you will see that the chip manufacture will suggest you now use a higher Octane Fuel to take advantage of the new program, but other than that, your just wasting your money.
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