jaren warren
Member
I've always been anal about getting 93 octane for my bike. Anytime I fill up for a track day (bike and gas can), I put some in my van first to flush out the lower octane. But it's always been a pure guess as to how much needs to go through until it switches over..........
On my way out of town to Gingerman, I stopped to fill up. A repair man came to fix a hose next to mine. So i asked him how much it took to switch over. He showed me the inside of the hose..........surprised to see the actual tube inside that carries gas is less than 3/8 inch, the rest is for vapor recovery (newer hoses). The gas switches over by valves at the top of the hoses. Since he was replacing a hose, he had to pump gas through until it filled the hose, which the dial measured. The answer? .28 gallons!!! That's it. And here I was going over a gallon. So if you fill up your bike (5 gallons?), .28 out of 10 isn't much. 2.8% for the mathematicians out there.
Will I still dump some in the van? absolutely!
On my way out of town to Gingerman, I stopped to fill up. A repair man came to fix a hose next to mine. So i asked him how much it took to switch over. He showed me the inside of the hose..........surprised to see the actual tube inside that carries gas is less than 3/8 inch, the rest is for vapor recovery (newer hoses). The gas switches over by valves at the top of the hoses. Since he was replacing a hose, he had to pump gas through until it filled the hose, which the dial measured. The answer? .28 gallons!!! That's it. And here I was going over a gallon. So if you fill up your bike (5 gallons?), .28 out of 10 isn't much. 2.8% for the mathematicians out there.
Will I still dump some in the van? absolutely!
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