Pay for 93 octane, get 87!
Thread Starter
|
Senior User
Joined: Nov 2005
Posts: 415
Likes: 0
From: Burlington Vermont area
Pay for 93 octane, get 87!
My Harley really likes 93 octane (or higher). It sputters a little but runs OK on 87 or 89. Nearly every time I can and bother to check, I see that the customer before me purchased 87 octane. The stock sportster tank is 2 gallons with 1/2 gallon reserve. That's right - 2 gallons.
So the delema is: when the customer ahead of me pumped 87 octane then I select 93 and pump 2 gallons, how much of that is 87 octane left in the hose/pump from the previous transaction? I'm sure it varies from one type of pump to another. I'm guessing it might be a gallon - so I wind up with something like 90 octane. Anybody got facts?
So the delema is: when the customer ahead of me pumped 87 octane then I select 93 and pump 2 gallons, how much of that is 87 octane left in the hose/pump from the previous transaction? I'm sure it varies from one type of pump to another. I'm guessing it might be a gallon - so I wind up with something like 90 octane. Anybody got facts?
Post Fiend
Joined: Feb 2003
Posts: 6,940
Likes: 2
From: Eastern WA
Assume the following:
Hose ID = .625"
Hose length and pump plumbing = 14' (168")
Given:
1 gallon = 231 in^3
Therefore, the fuel in the gas pump plumbing and hose = .22 gallons
**If it's 1/2" ID plumbing then the result is .14 gallons.
Hose ID = .625"
Hose length and pump plumbing = 14' (168")
Given:
1 gallon = 231 in^3
Therefore, the fuel in the gas pump plumbing and hose = .22 gallons
**If it's 1/2" ID plumbing then the result is .14 gallons.
Last edited by CowboyBilly9Mile; Feb 22, 2006 at 03:26 PM.
Thread Starter
|
Senior User
Joined: Nov 2005
Posts: 415
Likes: 0
From: Burlington Vermont area
Originally Posted by ford390gashog
hardly a gallon. more or less a few ounces.
Is this a guess or do you really know about this stuff?
Fleet Owner
Joined: Jan 2004
Posts: 26,007
Likes: 575
From: Brentwood,CA
not really a guess. i did pump repair and tank removal for a friends business for a while. we got a lot of calls when MTBE was outlawed and all the tanks had to come out. we also had to pull the pumps to re seal them and ship them off to get recertified.
The Southernmost Mod
Joined: Dec 2004
Posts: 6,902
Likes: 20
From: Caracas, Venezuela
Originally Posted by BikerWithTruck
My Harley really likes 93 octane (or higher). It sputters a little but runs OK on 87 or 89. Nearly every time I can and bother to check, I see that the customer before me purchased 87 octane. The stock sportster tank is 2 gallons with 1/2 gallon reserve. That's right - 2 gallons.
So the delema is: when the customer ahead of me pumped 87 octane then I select 93 and pump 2 gallons, how much of that is 87 octane left in the hose/pump from the previous transaction? I'm sure it varies from one type of pump to another. I'm guessing it might be a gallon - so I wind up with something like 90 octane. Anybody got facts?
So the delema is: when the customer ahead of me pumped 87 octane then I select 93 and pump 2 gallons, how much of that is 87 octane left in the hose/pump from the previous transaction? I'm sure it varies from one type of pump to another. I'm guessing it might be a gallon - so I wind up with something like 90 octane. Anybody got facts?
Post Fiend
Joined: Mar 2002
Posts: 19,402
Likes: 38
From: Bonita Springs FL
Trending Topics
Post Fiend
Joined: Feb 2003
Posts: 6,940
Likes: 2
From: Eastern WA
I've confirmed with a local gas station that I sometimes visit (Chevron) that the switch in question is in the pump. There are two lines leading to the pump; mid grade is blended at the pump.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
Thread Starter
|
Senior User
Joined: Nov 2005
Posts: 415
Likes: 0
From: Burlington Vermont area
Originally Posted by CowboyBilly9Mile
Assume the following:
Hose ID = .625"
Hose length and pump plumbing = 14' (168")
Given:
1 gallon = 231 in^3
Therefore, the fuel in the gas pump plumbing and hose = .22 gallons
**If it's 1/2" ID plumbing then the result is .14 gallons.
Hose ID = .625"
Hose length and pump plumbing = 14' (168")
Given:
1 gallon = 231 in^3
Therefore, the fuel in the gas pump plumbing and hose = .22 gallons
**If it's 1/2" ID plumbing then the result is .14 gallons.
Thread Starter
|
Senior User
Joined: Nov 2005
Posts: 415
Likes: 0
From: Burlington Vermont area
Originally Posted by andym
Why not just go to a gas station that has an individual hose for each octane rating?
Postmaster
Joined: Aug 2004
Posts: 2,908
Likes: 2
From: West Mansfield, Ohio
Snake is exactly right. If you look around on the pump, they normally come with an "Emergency stop" or a "safety stop button" that will shut the pump down, and then you can squeeze the handle and get the last bit of gas that you paid for, but is still in the line.
If there is no button, you can always stick you hand up against the flap inside the pump that tells the pump you've put the nozzle back... and then squeeze that little bit of gas out thats still in the line.
If there is no button, you can always stick you hand up against the flap inside the pump that tells the pump you've put the nozzle back... and then squeeze that little bit of gas out thats still in the line.
Gone but not forgotten.
Joined: Jul 2001
Posts: 6,521
Likes: 2
As I recall, there is not much gas in the hose. Many years ago, I bought my first motor vehicle, a Whizzer motorbike. Since I was always broke as a kid, I would make the rounds of the gas stations draining the hoses into my 1 gallon tank. It took many stops, but it kept me going.
Dono
Dono
Senior User
Joined: Jan 2006
Posts: 140
Likes: 0
From: Dent,Mn
Got my 1st HD in 78.Now I have a 80 FLT got it in 83,also a 01 FLHTC p/u in Dec 00,I just run 89 in them no problems,some times I put in a oz or two of sea foam to clean the carbs,bought my wife a 883 in 86,put a super gluide tank on it so she could go on longer rides,to me their is no big differance except the 20 cents per gal differance,if your into FULL THROTTLE go with 91-92 octain other then that,no sence losing sleep over it.The 1.9 gal sporty tank stinks,90 miles down the road on a fun run and all you want is a gas station,no fun there.
KEEP THE RUBBER SIDE DOWN.
LOUD PIPES SAVE LIFES.
and last but not least what I have on both my baggers.
D I L L I G A F !!!!!!!!!
KEEP THE RUBBER SIDE DOWN.
LOUD PIPES SAVE LIFES.
and last but not least what I have on both my baggers.
D I L L I G A F !!!!!!!!!
