110 octane in a car

Would it be safe to put 1 gallon of 110 octane(leaded) or 101 octane(unleaded) with 16 gallons of 87octane(unleaded) into a 2003 Impala LS or any car. If it is, would there be any benifits.

leaded fuel will trash a catalyst, so no.
if the car is rated for 87 octane, then there will be absolutely no benefit to using higher octane fuel.

leaded fuel will trash a catalyst, so no.
if the car is rated for 87 octane, then there will be absolutely no benefit to using higher octane fuel.
Listen to this guy.

leaded fuel also clogs the o2 sensor so it will not work

Lead was used to raise octane in the past, and no longer necessary in current fuels. Listen to these guys; higher octane only benefits cars that require it.

Jon

Using higher octane can someitmes rob power too. Higher octane fuels burn slower, and your engine MIGHT not even be able to run on that gas.

ivymike, I thikn there IS a benefit to using higher octane...it keeps your fuel lines and injectors clean (I think)

ivymike, I thikn there IS a benefit to using higher octane...it keeps your fuel lines and injectors clean (I think)


This is a common misconception. By law, oil companies are required to add the same amount of detergents to all octanes.


Jon