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Old 10-21-2010, 11:10 PM   #340 (permalink)
Nerys
Grrr :-)
 
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Join Date: May 2008
Location: Levittown PA
Posts: 800

Cherokee - '88 Jeep Cherokee
90 day: 19.44 mpg (US)

Ryo-Ohki - '94 Geo Metro Xfi
90 day: 50.15 mpg (US)

Vger 2 - '00 Plymouth Grand Voyager SE

Ninja - '89 Geo Tracker
90 day: 30.27 mpg (US)
Thanks: 12
Thanked 31 Times in 25 Posts
"How would it not help? Heat helps assist combustion and reduces how much spark and advance you need, going richer helps ignite a mix, leaner may help it burn hotter though. More pressure means more fuel, richer mix. A richer mix nets better fuel economy during acceleration and depending on how lean you are potentially during cruise."

a richer mix by every measure I could find worsens fuel economy. including the link DCB provided. If the car is running lean which fraks with the ECU causing it to "richen" ok that makes sense. but if the fuel pressure is FINE (I have not tested it yet) I see no reason to muk with fuel pressure or temperature.

"Also how do you really KNOW its 210? The thermostat onboard is notoriously inaccurate, most systems are under pressure so cavitation is usually not an issue until about 230ish. (sometimes higher)"

Because I have a PROPER temperature gauge. Calibrated. in my cherokee. I do a lot of wheeling and that vehicle has marginal cooling capacity as it is so monitoring the cooling system is critical.

it runs at 208-210 under load (the thermostat is 190 IIRC) its just how those engines run.

"In the last few weeks have you ever eaten at a fast food place? For the price of a hamburger you can buy enough Marvel Mystery Oil to dope 40 gallons of fuel or more. IT DOES Work on most older vehicles and DOES NOT COST MASSIVE AMOUNTS TO OBTAIN."

I am not sure why your telling me this I already said I would try the MMO and do a cost analysis.

its the VEGGIE OIL I am reluctant to try after reading up on it fraking injectors.

"You are right that it may or may not pay for itself, past experience tells me it costs less than what it would take for you to get E0. It worked wonders on our 93 suburban which always had an incorrectable miss on ethanol and passed vacuum tests. We got about 19-24mpg over the life of the vehicle with MMO in the tank which is above average so I'm told (at least for a 350 v8)."

again I already said I would try MMO as its known to be safe to engines.

its the VEGGIE OIL I am reluctant to try.