San Francisco Hybrid owners, or other hilly cities.
#33
02-20-2010, 04:12 PM
Active Enthusiast
Join Date: Sep 2009
Posts: 122
Re: San Francisco Hybrid owners, or other hilly cities.
KC135R what do you think about fuel additives? Also I have been in the Aviation fueling business for a few years and transportation, care, and Maintenace of the fuel is also important. I have seen large tanker trucks down loading there products in pouring rain. No question even with filters, clear and bright testing the product is degraded. Also fuel starts to lose its octane rating from the day it is made, not sure about additives there are so many. Also I agree with Jet 1 that priemum fuel is a waste of money, however is not the refining process for higher octane fuel better. Also I believe that in the colder climates the fuel manufacuters add an additive during the refining process in the winter months.
The TopTier gas thing is about the limit of my additives knowledge.
I heard a rumor that when they push different types of fuel through the same pipeline, there isn't a clean break between where one grade stops and the other starts. They just start pushing the next type of gas and the area that mixes together gets sold to the discounters. Might be totally wrong, just something I heard once.
Good point about loading fuel in rain; there are so many variables. The condtion of the tanks at each gas station, for instance. I read another article some time ago saying that many underground storage tanks wouldn't pass an inspection.
#35
12-28-2010, 12:44 AM
Active Enthusiast
Join Date: Nov 2010
Location: Lake Tahoe
Posts: 137
Re: San Francisco Hybrid owners, or other hilly cities.
I live at about 6500 feet and have been driving up and down the mountain as well as some trips around town. The passes are about 7500 feet and the valley on one side is 3500 while the other side goes down to 0 if I get all of the way to San Francisco. It's the beginning of winter, so I'm spending about 50% of the time in 4WD. Lots of the trips around town are short, so the truck is usually cold for a good part of the trip.
The last two tanks I managed to average 19.2 MPG. Considering the temps, the snow, and the terrain, I guess this isn't too bad. Looking for the chance for a road trip in warm weather of flatter ground to see what it is capable of doing.
The steepest climbs around here show about 8-10 MPG in V8 mode - but as you hit some of the flatter spots, it jumps up. Of course downhill gives you the 99 MPG. I find it better for gas mileage to stay in "D" going downhill and feather the brake to kick in some regen, rather then dropping to M4/M3. With M4/M3, the engine really spins up and the gauge indicates it's burning a bunch of gas.
The last two tanks I managed to average 19.2 MPG. Considering the temps, the snow, and the terrain, I guess this isn't too bad. Looking for the chance for a road trip in warm weather of flatter ground to see what it is capable of doing.
The steepest climbs around here show about 8-10 MPG in V8 mode - but as you hit some of the flatter spots, it jumps up. Of course downhill gives you the 99 MPG. I find it better for gas mileage to stay in "D" going downhill and feather the brake to kick in some regen, rather then dropping to M4/M3. With M4/M3, the engine really spins up and the gauge indicates it's burning a bunch of gas.
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