Thanks blrfl that might explain why some owners have a knocking problem ?
Keith
Keith
mtbe has a few advantages. It's cheaper reduces voc emissions and can be pushed thru existing pipelines without modifying them to handle ethanol. I don't remember if mtbe turning up in ground water had anything to do with using it or just leaky underground tanks.Unfortunately, MTBE is still being used in Arizona gasoline.
Go figure.
Mark, I think ten percent is mandated by the corn farmer lobbyist!...which is exactly why it's there. Lead is long gone (which I'm okay with) as is MTBE. Ethanol is what's left until someone comes up with something better, but I question whether there's any engineering or environmental reason that makes 10% necessary.
--Mark
That's true...I read somewhere that the government committed to a certain number of million gallons every year....and it raises every year....problem is cars are getting more efficient so less gas overall is being sold....that's why they want the 15%.....not enough sales of E85 to make up the difference....thank ConAgra and others for their efforts..........ffMark, I think ten percent is mandated by the corn farmer lobbyist!
...which is exactly why it's there. Lead is long gone (which I'm okay with) as is MTBE. Ethanol is what's left until someone comes up with something better, but I question whether there's any engineering or environmental reason that makes 10% necessary.
--Mark
EGR was put in place long before lead went away to cut back on NOx emissions. The combustion process is cooler when there's exhaust gas in the chamber because it's inert filler that displaces oxygen that would otherwise be used in burning the fuel. What I'm not sure about is whether that has any effect on the fuel's resistance to starting the process in the first place. I'd be leaning toward not since they'd have used a higher percentage of exhaust gas to cut back on the lead requirements if it did.
--Mark