Fuel for Gassers
Anyone run Premium fuel or Octane Boost? Improved performance/mileage or waste of $$.
Forum Discussion
RLS7201 wrote:
Why does premium fuel give more mileage and power?
Richard
Matt gave a very good answer and I'll add just a bit more. When engines are new, they usually don't ping even under high load and heat. But as they age,deposits build up on the top of the combustion chamber, valves, and pistons. These deposits raise the octane requirements because they take up space, and actually raise the compression ratio and the result is that the engine starts pinging on 87 octane. On cars, you usually see it start about 30-40 thousand miles. Engineers call it "Octane creep." So if you hear that rattling sound,you can move up to 89 octane to stop it if you'd like. Even though some manuals say light pinging is ok, myself I just want it stopped. I just give it what it wants. Higher octane doesn't really give you more power, it just stops the sensors from taking away power.
