No HTwo O

I agree.

Neil Perry

Hi
One issue I have found with other cars is keeping the fuel injectors clean.
Fuel injectors become inefficent when dirty and creat an uneven spray, thus reducing you fuel economy.,

I have found on a car with 150,000klms, cleaned the injectors and had an improvment of about 30%.

Thanks,

brad@tirerack.com

DING DING DING! We have a winner!!! I was waiting to see who would recommend this first!

Proper air pressure is about the best "cheapest" thing you can do.

Mizuno

+1.

Monitoring oil and gas consumption steadily.

Fyi, My tire pressure matched the recommended pressure.

e9stibi

Do not see a track.

Leon993

...and of course if the your running 20 psi on your tires, I think its normal to have low mpg LOL!

Mark in Baltimore

Scott, Quadcammer is offended because he drives a Porsche, er, PORSCHE.

CAHRERA

.....Life to short to worry about the small crap. Porsche or PORSCHE its all same. Keep forgetting we're not communicating face to face so when people read comments they can take things differently.

os993

Good timing on this thread. I am driving my baby more these days (daily driver) and am noticing some rotten mileage, like 15-16mpg average!! Some town, some freeway, some 5k rpm, but nothing crazy.

I tried Stealth 993's recommendation for 38f/45r (I'm more of a 32/34 kindof guy), an the 38/45 made my ride terrible (way too harsh).

I'm on 17" cups, with PSS10's as max softness and new Sumitomo's. 38/45 has got to go!

So, what is the optimal tire pressure then?? I think I'll try 36f/38r next time around!

No HTwo O

36/40

or

36/42

os993

Cool! Sounds reasonable. I'll try 36/40 and report tomorrow my impressions.

Mister C

You could try hypermiling (drafting a big truck).

Not the safest practice but it will increase your gas mileage. Supposedly a 93% drag reduction at a distance of 2 feet.

http://www.env-econ.net/2007/06/mythbusters_and.html

IXLR8

Cruising at a steady 70 MPH in 6th gear, I got 25.75 miles per US gallon on the long drive home from picking up the car, all on two-lane interstate type highways.

JPS

Doesn't get much better than that.

Other than that, tires, 6th gear, use your cruise control. Don't date fat chicks. (kidding)

DanQ

Probably more ideas than you want to try, but do a search on hypermiling techniques. Many require a manual trans.

1) Slow down on the highway you'll get much better mileage at 55 than 75 mph.
2) If you are serious, get a ScanGaugeII. You can see how pulse and gliding saves mpg. Unit gives trip MPG, instantaneous MPG, etc.
3) Over inflate your tires, 40 PSI will pick up 5% MPG, better rolling resistance.
4) Turn off engine at stop lights that last longer than 20 sec.
5) Draft
6) no Air Cond

Other stuff too. Some of the stuff requires much more concentration to execute while in traffic, but what else do you have to do sitting in traffic.