Originally Posted By: synthetic_crazy
As gas prices have begun their upward trek more quickly as of late, I have reverted to some of my 2008 gas saving techniques. Here are a few that I use:
1. I try to keep my highway speeds less than 65, preferably closer to 60.
2. I don't use cruise and as a result allow the car to lose around 5 mph while ascending hills on the interstate. (I maintain the position of my foot on the gas; I don't press farther to maintain the speed up the hill)
3. Anticipate stops at redlights by coasting as far back as possible from the light.
4. No more warm-ups; I wait about 8 seconds after start-up and the car is in gear and rolling.
So far, this has increased my mileage by about 2mpg. I was averaging 29 in my Corolla(3speed automatic transmission) and have increased it to 31 around town. Anybody else have other techniques?
Good ideas except #2 is not contributing to your increase in MPG(IMOA). Using CC on the highway actually helps your MPG as the vehicle maintains a steady speed at the optimum speed/RPM range for the vehicle. While you may be saving a very tiny, minute, amount of fuel going up hills and letting the engine slow down vs the CC giving it more gas to maintain speed, as you say, the CC actually would be saving you more on the flat sections than it is costing you on the hills.
You just can't maintain that nice steady even 60 MPH with your foot over a long drive. No one can if they are honest. You are going to slow down and speed up and slow down and speed up and etc... This takes you in and out of the optimum speed/RPM range constantly. That means you are giving more gas constantly to get back to the 60 MPH when you fall under it even if you don't realize it. You will also use more gas when you are going faster than that 60 MPH sweet spot too. CC will keep you there in that best MPG zone. Use CC along with those other things you are doing and chances are you see more of an increase. Certainly I would doubt a loss.
For me 60 MPH in CC highway gets me the best MPG it seems regardless of the vehicle I have owned. Actually, I even use CC at speeds as low as 40-45 MPH when possible as CC always helps my MPG for the reasons I mention above. I just can not keep the truck in the sweet spot with my foot as effectively as CC can. Hilly regions excluded of course.
If people would simply slow down they would increase their MPG significantly. Going 70, 75, 80, 85+ KILLS MPG even in small economy 4 cyl vehicles and mild mannered V6's never mind trucks and suv's with gas guzzling V8's. Drop it to 60-65 and your MPG will go up if you are one of those lead foot lunatics that literally flies down the highway( will also cut down on traffic accident fatalaties out there too ). Also, accelerating easily from a stop vs flooring it like you are in a drag race also will help your MPG significantly.
Other tips would be...
1 - reduce the weight in your vehicle. Take out everything that isn't needed. Your vehicle is not a storage bin. Lighten the load and MPG will rise.
2 - keep your tires properly inflated. I like to run just a couple PSI higher( cold )than the door jamb sticker says. The factory setting is too low. Properly inflated tires will help MPG vs running them low.
3 - synthetic fluids all around. Not a huge gain but some vehicles can actually see 1-2 MPG from this( i.e. diff's, transmission, engine ).
4 - keep your vehicle properly tuned up and make sure the air filter is clean. IF the filter looks like it just came out of the inside of your exhaust pipe vs the air box change it.
5 - running a good fuel injector cleaner once every 1-2 months helps keep the fuel system clean.
These tips help "some". The biggest thing you can do though to help your MPG is to SLOW DOWN!