If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Not that I'm complaining . . .
Anyone know why my fuel consumption would suddenly go from years of 26 mpg to about 33 mpg? It started about two weeks ago, with the only new occurrence being a change from Sunoco gas to Citgo. I can imagine there being some minor difference between the two stations, but enough for a >25% increase in efficiency? If it is the gas, any idea what aspect of engine operation would be affected? FWIW, '98 SL2, 68K mi, located in Central New York, most trips <7 mi, new ignition control module several months back, color (regretfully) is that funky silver plum -- __________________________________________________ ____________________________ Lou Hom >K'93 http://www.ocf.berkeley.edu/~lhom/ |
Ads |
#2
|
|||
|
|||
I find that my '01 lw300 seems to like some gas better than others. I
usually average about 300 miles per tank (15 gallons capacity) on getty regular grade. I got some Amoco the other day and got almost 400 miles on the tank. Same driving patterns so I can only assume that the engine likes the Amoco additives better. Admittedly, this is not a scientific test. I don't keep records of how many gallons go into the tank so MPG is vague at best. Bad O2 sensors will usually drag down your mileage. It's also possible that the different gas you used cleaned off a marginal sensor and improved the mileage. Oppie "Louis Hom" > wrote in message ... > > Anyone know why my fuel consumption would suddenly go from years of 26 mpg > to about 33 mpg? It started about two weeks ago, with the only new > occurrence being a change from Sunoco gas to Citgo. I can imagine there > being some minor difference between the two stations, but enough for a > >25% increase in efficiency? If it is the gas, any idea what aspect of > engine operation would be affected? > > FWIW, '98 SL2, 68K mi, located in Central New York, most trips <7 mi, new > ignition control module several months back, color (regretfully) is that > funky silver plum |
#3
|
|||
|
|||
Maybe Amoco pumps put more gas in a tank for a fill up.
"Oppie" > wrote in message ... >I find that my '01 lw300 seems to like some gas better than others. I > usually average about 300 miles per tank (15 gallons capacity) on getty > regular grade. I got some Amoco the other day and got almost 400 miles on > the tank. > Same driving patterns so I can only assume that the engine likes the Amoco > additives better. Admittedly, this is not a scientific test. I don't keep > records of how many gallons go into the tank so MPG is vague at best. > > Bad O2 sensors will usually drag down your mileage. It's also possible > that > the different gas you used cleaned off a marginal sensor and improved the > mileage. > Oppie > > "Louis Hom" > wrote in message > ... >> >> Anyone know why my fuel consumption would suddenly go from years of 26 >> mpg >> to about 33 mpg? It started about two weeks ago, with the only new >> occurrence being a change from Sunoco gas to Citgo. I can imagine there >> being some minor difference between the two stations, but enough for a >> >25% increase in efficiency? If it is the gas, any idea what aspect of >> engine operation would be affected? >> >> FWIW, '98 SL2, 68K mi, located in Central New York, most trips <7 mi, new >> ignition control module several months back, color (regretfully) is that >> funky silver plum > > |
#4
|
|||
|
|||
Entirely possible...
Also the flow rate from the pump. On the L series, there is a variable orifice on a float to the tank vent. It's supposed to cause the filling pump to shut off when the tank approaches full. You can get more fuel in the tank by filling slowly. I'm an engineer but not anal-retentive about keeping records on mpg <grin>. Being a bit mentally overloaded (overwhelmed) at work, I reserve all experimental protocols for the paying job. "Art" > wrote in message nk.net... > Maybe Amoco pumps put more gas in a tank for a fill up. > > |
#5
|
|||
|
|||
In article >, oppie@-nospam-
cloud9.net says... > > > Anyone know why my fuel consumption would suddenly go from years of 26 mpg > > to about 33 mpg? It started about two weeks ago, with the only new > > occurrence being a change from Sunoco gas to Citgo. I can imagine there > > being some minor difference between the two stations, but enough for a > > >25% increase in efficiency? If it is the gas, any idea what aspect of > > engine operation would be affected? > > > > FWIW, '98 SL2, 68K mi, located in Central New York, most trips <7 mi, new > > ignition control module several months back, color (regretfully) is that > > funky silver plum > > Well hopefully you arent trying to estimate your fuel consumption via the fuel gage. |
Thread Tools | |
Display Modes | |
|
|