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16

That is a great question. I believe the true answer here is "it depends". Like so many other things you can do with your vehicle, if your vehicle cannot use the higher octane fuel, it won't benefit from it. Something to remember about octane ratings is, the higher number does not mean it is more energy dense. The higher number indicates the fuel is actually ...


7

The fastest, cheapest and easiest solution is to add a battery disconnect switch to the car. After placing the ignition switch into acc mode the open the hood and disconnect the switch. When you arrive at your destination, open the hood and reconnect the switch. This costs under $20. It also eliminates the need to run anything or calculate anything. Many ...


6

Two great comments already; couple of things to add. The reason why we have Octane types is because the lower-octane fuels tend to ignite at lower temperatures (ie. hot metal parts inside the combustion chamber, rather than the spark plug firing) or lower compression pressures (ie. the compression fires the engine like a diesel engine works). The octane ...


6

Engine control systems in typical cars do not generally change the spark advance to add more than expected, the engine is designed to run at a particular efficiency for a given octane, so changing it from whats specified by the manufacturer isn't a good idea. If there is sub optimal conditions and the engine management detects a problem, fuel mix or knock ...


5

... As the air gets thinner at higher altitudes, your air/fuel ratio is going try to stay the same (emissions, performance, fuel efficency) if you're under the control of the ECU in closed loop mode. Consider the Mass Airflow Sensor, which detects the total mass (not volume!) of air entering the engine by a hot wire resistance sensor. Note that I have no ...


4

adding a diode would probably be counterproductive as it will cause an extra voltage drop, I'd look into fitting a relay such that the socket was not connected during engine start.


4

There has been a lot of good information shared here, especially by Lawrence Wade (from my perspective). But we're slightly left hanging about the two closely-related fundamental questions from the OP: Will higher octane fuel, increase power while towing? and Will higher octane fuel impact the available power in common v-6 regular gas burning ...


3

A lot of people get confused with octane ratings. The octane rating is the fuels resistance to detonation, ie, the fuel / air mix igniting just due to pressure. When this happens the resulting burn is very violent and can easily cause major engine damage. When the fuel / air mix burns normally it pushes down progressively on the piston; when detonation ...


3

Disconnecting the battery messes up your radio, etc. Instead of a diode which causes a voltage drop you could put a 55 W lamp in series. It will limit the current to the battery but as the battery charges up the voltage drop across the bulb will reduce and the battery gets full alternator voltage. When cranking the motor home its battery voltage may drop to ...


1

I found this online.... Should solve your issue:



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