gas mileage 3.8 V-6 guys step in

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gas mileage 3.8 V-6 guys step in

Reply #15 – June 30, 2008, 08:54:32 AM

supposedly synthetic oil helps with the fuel mileage... less resistance or something.... i don't know... i can tell you that when driving 9 over about 75% on the interstate in my focus i was getting 26.4mpg..... i decided to slow the 9mph and go the speed limit everywhere..... it went up to 29.4... wow, i guess speed really does kill... the mpg that is :)

gas mileage 3.8 V-6 guys step in

Reply #16 – June 30, 2008, 07:35:48 PM

I used to average 22 in town. 26 hwy.

Now 351w. 14 in town 17 hwy.

gas mileage 3.8 V-6 guys step in

Reply #17 – June 30, 2008, 08:28:15 PM

speed only kills the mpg if you don't have a trip computer whatnot. Get up to 100 or there abouts, and your doing 99+ mpg untill you hit the gas again.

gas mileage 3.8 V-6 guys step in

Reply #18 – June 30, 2008, 11:51:23 PM

I get a whopping 0 MPG!

Heh,
I was supposed to have her on the streets this summer, But no....
Still getting put to the beck of the list. *sigh*
:mad: :mad: :mad:

gas mileage 3.8 V-6 guys step in

Reply #19 – July 04, 2008, 12:52:49 PM

My 95 3.8 gets ~18 city 27 highway. Then again I'm not exactly a lead foot when I drive it.

gas mileage 3.8 V-6 guys step in

Reply #20 – July 04, 2008, 01:26:41 PM

2005 GTP-COMPG-3.8 supercharged..gas for me isn't all that bad but i'd be insane to put in reg. I use mid at the lowest. im guess around 18-21.

gas mileage 3.8 V-6 guys step in

Reply #21 – July 04, 2008, 03:21:15 PM

174 mpg down a hill once.

gas mileage 3.8 V-6 guys step in

Reply #22 – July 04, 2008, 06:34:11 PM

I get about thirty on the highway. I averaged 29 on a 300 miles trip. But i got lost in the city for over an hour. I didn't think that was bad.

gas mileage 3.8 V-6 guys step in

Reply #23 – July 05, 2008, 11:31:02 AM

My gauge says 99.99mpg going down hills somtimes lol somtimes in the 60s..dont think I can believe it though.

gas mileage 3.8 V-6 guys step in

Reply #24 – July 05, 2008, 10:01:24 PM

I got around 33mph on a highway (55-65mph), and around 25mpg in the city.

I got this mileage when the temperature is around 70`F, less if coldest, and a bit better if is warmer.

My engine is carbed, 16inches tires (225/60r16) at 35psi, oil is full syntech (castrol) 10w30.

Regards,

Dom.

P.S.

My "new" 1991 firefly 3 cylinder got a good 50mpg mixed road/city :), This will be PERFECT to replace My Econoline in the winter :)

gas mileage 3.8 V-6 guys step in

Reply #25 – July 17, 2008, 11:24:27 AM

I have a feeling some of you guys are getting some very inaccurate numbers. If you are getting 40MPG's, then you need to go to Motor Trend magazine or some other publication and have them test it out. I just don't believe it.

gas mileage 3.8 V-6 guys step in

Reply #26 – July 27, 2008, 01:09:26 PM

This is the sticker from ours----our mileage over the years is close to this. I have not checked lately.

gas mileage 3.8 V-6 guys step in

Reply #27 – July 27, 2008, 02:42:40 PM

Quote from: Vantage08;226001

My gauge says 99.99mpg going down hills somtimes lol somtimes in the 60s..dont think I can believe it though.

It is correct because when you let off the gas it cuts fuel to the engine. No gas used x going miles = infinite mpg.... while youre off the gas at least.

Theres a difference between instant mpg and average mpg.

Oh by the way.... 25-30 mpg in my tbird aint that bad, but my last fillup in the festiva was 48.3 mpg. Thats combined city/highway. Im hoping for 50+ within the next few fills.

gas mileage 3.8 V-6 guys step in

Reply #28 – July 28, 2008, 09:43:03 AM

When I was using my 88 cat for a daily driver, I averaged about 20 in stop and go traffic and 28 on the highway at a steady 62mph. Now it's sleeping in a barn and getting 0. :D

gas mileage 3.8 V-6 guys step in

Reply #29 – July 28, 2008, 10:16:33 AM

Quote

I have a feeling some of you guys are getting some very inaccurate numbers. If you are getting 40MPG's, then you need to go to Motor Trend magazine or some other publication and have them test it out. I just don't believe it.

Personally I don't trust the Tripminder figures to be accurate. There are too many variables constantly changing and it's just so easy to rely on that data. The only true way to figure out fuel economy is to drive from a full tank, fill up, and back-figure the mileage vs. the gallons it took to fill the tank. That's still the method I use on all my vehicles.

So when I drove home from Carlisle exactly 160 miles on one stretch of road, then stopped to fill the tank back up, and it only took 4.0 gallons...that is a 40 mpg figure that cannot be disputed.

And yes, the tires were the correct height, and the speedometer was verified to be accurate.