Hi-Octane and Petrol - how much of each?

Home > Gari Forums > Others Forums > Others Other Forums > Others Other Engine Forums

Hi-Octane and Petrol - how much of each?

Hello,

I heard that its is good to mix hi-octane with petrol once in a while. Is this correct and if so how much hi-octane and how much petrol should I use and how often?

Thanks

Gari.pk User 3958 asked on 13 Jul 2010 11:43:14 am

1 Answer

282 views |

Samar - on 13 Jul 2010 11:43:50 am

as far as i have read,
its best to use the minimum(engine specified) grade fuel to run your car. more then that is waste of money

Will higher octane gasoline clean your engine better?
As a rule, high octane gasoline does not outperform regular octane in preventing engine deposits from forming, in removing them, or in cleaning your car's engine. In fact, the U.S. Environmental Protection Agency requires that all octane grades of all brands of gasoline contain engine cleaning detergent additives to protect against the build-up of harmful levels of engine deposits during the expected life of your car.

Should you ever switch to a higher octane gasoline?
A few car engines may knock or ping - even if you use the recommended octane. If this happens, try switching to the next highest octane grade. In many cases, switching to the mid-grade or premium-grade gasoline will eliminate the knock. If the knocking or pinging continues after one or two fill-ups, you may need a tune-up or some other repair. After that work is done, go back to the lowest octane grade at which your engine runs without knocking.

Is knocking harmful?
Occasional light knocking or pinging won't harm your engine, and doesn't indicate a need for higher octane. But don't ignore severe knocking. A heavy or persistent knock can lead to engine damage.