Switching gasoline type.... do i need to remove all the old gas first?

Question

Im currently using 87 gas for my motorcycle and want to start using 91. Do i have to suck all the old gasoline first, or do i just starting filling up using 91.

Answer 1

Just start filling up using 91.

Answer 2

No.

We have never removed the gas from our bikes when we refueled with better fuel. .

My husband frequently adds 91 or 93 gas depending on how the bike is running.

Mid-grade is just a mix of low & high grade in most cases anyway.

Answer 3

just add the 91 to your tank, it will take 1 tankful to get rid of the 87 and then you will be running the 91 octane.

Answer 4

Just start using the 91.

By the way, if it's not 'pinging', there is no reason to change to a higher octane gas.

Higher octane does not mean 'better'.

Unless you have a higher performance, high compression engine, all you achieve by using higher octane gas is less money in your pocket.

The octane rating is a measure of the resistance of gasoline to autoignition (pinging) in spark-ignition internal combustion engines.

Answer 5

No, just start using 91.