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#11
posted to rec.boats.cruising
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stolen fuel
On Wed, 18 Jun 2008 16:04:07 -0600, "Kapt Krunch"
wrote: Leave only 20 gallons or so in the tank but add octane booster to get it up to about 200 octane. If it gets stolen and used it will damage the engine in goes into. In the spring just fill the tank up and the octane level will go down. Octane booster is only good for five points, or so. Triptane has a rating of 170 when blended with tetraethyl lead. That is as high as it gets. Propane is 100, methanol and ethanol about 110 as is toluene. Acetone is over 100. So called low lead 100 avgas is 115 and is the highest you can buy from a pump. The closest small town gas station has racing gas during the season, but I don't know how it rates. There will be a quiz. Casady |
#12
posted to rec.boats.cruising
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stolen fuel
On Jun 18, 6:21*pm, "Roger Long" wrote:
That reminds me that I meant to ask if anyone here knows what the real and practical differences are between heating oil and diesel fuel. *... Slightly OT, but I keep hearing experts arguing that one reason that a small diesel car is less green than a gas/electric hybrid is that diesel fuel is more highly refined than gasoline. Of course diesels as a class can run on anything from asphalt to kerosene. So, what special things are they doing to make diesel fuel as we know it and why are they doing it? -- Tom. |
#13
posted to rec.boats.cruising
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stolen fuel
On Wed, 18 Jun 2008 21:21:13 -0400, "Roger Long"
wrote: The yard told me to use an octane booster with the heating oil but I've had others tell me boosters are a bad idea for small diesels. The higher the octane the worse the fuel. Diesel fuel has its own rating: Cetane. Basically the higher the octane the lower the cetane. Casady |
#14
posted to rec.boats.cruising
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stolen fuel
"Roger Long" wrote in
: That reminds me that I meant to ask if anyone here knows what the real and practical differences are between heating oil and diesel fuel. I've know a lot of commercial operators who run their boats on heating fuel. The first tank of fuel I burned in Strider was heating oil because that was all the yard could get to put in the tank while the boat was on the hard. They told me it might produce a little less power but I didn't notice any difference after my first fill up with marine diesel. The yard told me to use an octane booster with the heating oil but I've had others tell me boosters are a bad idea for small diesels. The difference between #2 Fuel Oil and #2 Diesel Fuel is TAX. They both come from the same filthy tankage from the refinery floating on seawater....(c; Some home heating oil is kerosene (#1 fuel oil) or the heavier #3 fuel oil as their application is far less critical. I suspect you may have been running your boat, in Maine, on kerosene, which does make less power per gallon, but is fine for the engine. If you find a real deal on #3, just blend it with kerosene #1 50/50 so it doesn't smoke too much. All your fuel up there must be "winterized" diesel all year round, I'd suspect. If it gels up, just heat it with your electric heater until it liquifies, then the engine heat will keep it flowing as the engine room warms....the reason most fuel tanks are in the engine rooms on pleasure boats. "home heating oil" is a kind of nebulous term that could mean any of the various grades of thin fuel oil, or combinations of them, whatever the oil jobber has cheaper this week. If it smokes and starts hard, pour in some kerosene to thin it so injection is more successful. Octane has no place in a diesel engine. Octane is in gasoline, an aromatic that evaporates at room temperature. "Octane Boosters" are grain alcohol, exactly what oil companies now use to make 87 octane Regular gas into 93 octane "SooperDooper". Too bad they deliver medium grades to marinas, not regular, to try to justify the awful markup at the dock. Medium grade gas has alcohol in it which ATTRACTS WATER like a magnet....in a boat?!! Insane. Diesel "Booster" is a CETANE enhancer like: http://www.madsci.org/posts/archives...3830.Ch.r.html CETANE enhancers make a diesel easier to start in the freezing cold (Maine? COLD?!!) and also reduce diesel knock because it makes the mixture fuel/air explode at a lower temperature. It hardly changes the "power" at all. To change the "power", we open the injection to a higher setting (more throttle), up to the smoking point, where more injection just causes wasted fuel as we're out of oxygen to burn. Lots of real snake oil crap is also for sale at amazing prices.... http://www.idealtruevalue.com/servlet/the-19105/Detail http://www.dieselfiltersonline.com/P...Diesel-Cetane- Booster-and-Performance-Improver-PM22A-PM-22-A.aspx http://www.shopdiesel.com/index.cfm/...roduct_id/1266. htm If you open any of these wonderful products selling for about $60/gallon, you'll immediately notice their "Fragrance of Diesel Fuel", and diesel fuel color and VAGUE promises of Diesel Utopia pulling the gearbox apart with such amazing power. Who in hell wants to pay $60/gallon for Diesel- Fuel-In-A-Bottle?? What nonsense.... Take that money and buy us an extra oil change and fuel filter change. You can NEVER change the oil in a diesel too often!...(c; If you need more power....We have your solution! http://youtube.com/watch?v=7JpIdkehdD0 No Cetane Booster necessary.....(c; LOOK AT THE SIZE OF THAT PISTON!! http://www.youtube.com/watch?v=eVezfnW3Wu4&NR=1 Careful...Don't fall in the cylinder hole. IT'S A LONG WAY DOWN! Remember those TV commercials from inside the crankcase for Bardahl? http://www.youtube.com/watch?v=FCGen0kxwG0 And when you get the throttle set just right: http://www.youtube.com/watch?v=N5A3So5eoL8&NR=1 She cranks right up on the first pull! Just don't get your pants caught in the starter: http://www.youtube.com/watch?v=XI7byyL4wMA Maybe this little one would be more appropriate: http://www.youtube.com/watch?v=qSx0AKguOtw God I love You Tube....(c; |
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