Gas Mileage
Thread Starter
Instructor
Joined: Feb 2005
Posts: 215
Likes: 0
From: Los Angeles CA
Gas Mileage
dont bust my chops on this one. I know trying to find a way to save money with a vette is oxymoronic (if thats a word) but I'm still going to ask!
how to save money on gas, extend gas mileage, lower gas consumption
I have a C5 1998 standard and i get about 300 miles to a full tank of gas. i think my tank is 17 gallons
If im on the highway i can get up to 320 for a full tank
some ways I was thinking about how to save on fuel
1.I heard of this product that you put in your gas tank (looks like a silver bullet with holes in it) and it improves your gas mileage. saw it in the sky mall magazine in the plane..
2. a certain brand of air filter? i heard can improve?
3. muffler system?
So if I bought for example a new air filter system for example $300 and it saved me $10 per fill up then it would save me money in the long run Id buy it. Let me know if you have any ideas!
.......
I already drive slowly
have properly inflated tires
I do know about AC and gas consumption
how to save money on gas, extend gas mileage, lower gas consumption
I have a C5 1998 standard and i get about 300 miles to a full tank of gas. i think my tank is 17 gallons
If im on the highway i can get up to 320 for a full tank
some ways I was thinking about how to save on fuel
1.I heard of this product that you put in your gas tank (looks like a silver bullet with holes in it) and it improves your gas mileage. saw it in the sky mall magazine in the plane..
2. a certain brand of air filter? i heard can improve?
3. muffler system?
So if I bought for example a new air filter system for example $300 and it saved me $10 per fill up then it would save me money in the long run Id buy it. Let me know if you have any ideas!
.......
I already drive slowly
have properly inflated tires
I do know about AC and gas consumption
Race Director
Joined: Feb 2008
Posts: 17,336
Likes: 8
From: Maker of Sharp Objects, AL - Roll Tide
St. Jude Donor '10-'11-'12-'13-'14-'15-'16-'17
St. Jude Knife Maker
It wouldn't hurt to make sure it is breathing right. A K&N filter will help on power and gas mileage. Just the filter will help some, but an intake system would make more of an improvement. For example a Blackwing or a vararam. Out back if you had headers, high flow cats, an X pipe and a cat back system, it would certainly be less restrictive than the stock setup. Do a tune up, plugs and wires and the like. All this combined will pick up some gas mileage for ya, but it will also make the car have a little more power. Beware of the mod bug. When it bites it bites hard, and you will forget the "I alredy drive slow" thing!
Burning Brakes
Joined: Jul 2007
Posts: 924
Likes: 0
From: Macedon NY
Go to BJ's for high test -only $.02/ gal more than regular at any of our local stations. $$$$ saved!! Or you can keep it as a garage queen or better yet, say the hell with it, keep it tuned, don't mechanically mod the hell out of it to get a few more horses and just enjoy it for what it is.
Melting Slicks
Joined: Oct 2006
Posts: 3,447
Likes: 6
From: Los Angeles
2. Pretty much any aftermarker intake is as good as the other. Intakes seem to be a heated argument on C5 Gen.
3. Exhaust won't really increase your gas mileage, but any aftermarket set up would be less restrictive. LT headers can scavange exhaust more efficiently from the engine and increase mpg under normal driving conditions. But the cost to buy/install them probably outweighs the $$ savings in gas.
It sounds like you consumption is a little higher than most, but still good. You have an 18 gallon tank (two 9 gallon tanks). No need to swap plugs and wires on a stock C5... they are good to 100k+ miles.
Try changing your fuel filter, too.
Instructor
Joined: Mar 2003
Posts: 211
Likes: 1
From: Noblesville IN
You actually have two saddle bag tanks with a total capacity of about 19 gallons. If you are only getting 320 per tank on the highway, I think you have something wrong. On my last road trip, I was averaging 29 MPG which is over 450 per tank when the light comes on.
I know there have been several threads about fuel economy, but 20 MPG city and 28 MPG Hwy isn't unheard of... until you put your foot on it.
Just my $0.02
I know there have been several threads about fuel economy, but 20 MPG city and 28 MPG Hwy isn't unheard of... until you put your foot on it.
Just my $0.02
Burning Brakes
Joined: Jul 2007
Posts: 924
Likes: 0
From: Macedon NY
You're definitely on the low end of the mileage scale, depending on engine mods. My '99, stock motor except for a SLP Powerflo system averages 20 -24 city and 28 -31.7 HWY under normal driving. I have changed plugs, wires and use just Royal Purple lube products.
Good luck in your endeavors!
Good luck in your endeavors!
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Thread Starter
Instructor
Joined: Feb 2005
Posts: 215
Likes: 0
From: Los Angeles CA
so here are the ideas I am getting that I SHOULD do to save me gas money:::
Change my air filter to a K&N filter
change my fuel filter
Other ideas I'm still not sure about:::
changing a muffler system would outweigh saving benefits from the impression I'm getting?
no need to do new plugs or wires until 100k I have 70k on my girl so what is the consensus on this you think?
what is BJ's? I'm In Los Angeles is this a garage?
what is the consensus on something like the seafoam (those silver peanut/bullet looking things you put in your gas tank) to increase mpg?
I'm still wondering why my mpg is lower then your guys? I do a LOT of city driving stop and go. Its my daily driver
Change my air filter to a K&N filter
change my fuel filter
Other ideas I'm still not sure about:::
changing a muffler system would outweigh saving benefits from the impression I'm getting?
no need to do new plugs or wires until 100k I have 70k on my girl so what is the consensus on this you think?
what is BJ's? I'm In Los Angeles is this a garage?
what is the consensus on something like the seafoam (those silver peanut/bullet looking things you put in your gas tank) to increase mpg?
I'm still wondering why my mpg is lower then your guys? I do a LOT of city driving stop and go. Its my daily driver
Instructor
Joined: May 2006
Posts: 142
Likes: 0
From: St. Marys OH
Concerning your mileage like said above sounds low. I get around 16-17 around town with little highway driving, but strictly highway I get 29 easy. I drove down 3 hours to Cincy, around Cincy, and 3 hours back, and averaged 29.5 MPG on using the pump and mileage.
Safety Car
Joined: Jul 2001
Posts: 4,661
Likes: 67
From: Ocean Springs MS
Other ideas I'm still not sure about:::
changing a muffler system would outweigh saving benefits from the impression I'm getting?
A new catback might get you a couple % increase in mileage due to decreased exhaust restriction, if it's a good design (the C5 system is already pretty free flowing.) On the other hand, for the price of a "good" catback, you can buy 10-15 tankfuls of gas.
no need to do new plugs or wires until 100k I have 70k on my girl so what is the consensus on this you think?
Wires should still be good. Plugs might help.
what is the consensus on something like the seafoam (those silver peanut/bullet looking things you put in your gas tank) to increase mpg?
Seafoam is a liquid cleaner that comes in a can. You run it through the engine using the PCV intake, and it cleans out the combustion chamber deposits. It has nothing to do with the "snake oil" instant cures you keep referencing.
changing a muffler system would outweigh saving benefits from the impression I'm getting?
A new catback might get you a couple % increase in mileage due to decreased exhaust restriction, if it's a good design (the C5 system is already pretty free flowing.) On the other hand, for the price of a "good" catback, you can buy 10-15 tankfuls of gas.
no need to do new plugs or wires until 100k I have 70k on my girl so what is the consensus on this you think?
Wires should still be good. Plugs might help.
what is the consensus on something like the seafoam (those silver peanut/bullet looking things you put in your gas tank) to increase mpg?
Seafoam is a liquid cleaner that comes in a can. You run it through the engine using the PCV intake, and it cleans out the combustion chamber deposits. It has nothing to do with the "snake oil" instant cures you keep referencing.
Go easy on the gas pedal, you should get 17-20 mpg even in all city driving.
Le Mans Master
Joined: Sep 2007
Posts: 7,604
Likes: 8
From: Belleville Il
Cant say it loud or strong enough CHANGE THOSE PLUGS!!!!!70 K they are flat worn out!!! I have a 2000 FRC around 58,000.It ran OK, it was going to be put on a dyno display at the Gateway Midwest nationals so I decided I wanted it running tip top,so I got new plugs and wires. When I pulled the plug I was shocked!! Gap is supposed to be .040,,, the tightest gap was .060 most running .065 to .070 a couple were almost .080. this was at 57,000+ mi. The car REALLY WOKE UP!!! The car is stock except for a Blackwing filter and Corsa touring exhaust. They did 13 dyno pulls #1. 324.72 hp,329.46 tq. #13. 338.92hp 345.91tq. the computer "learns" and adjusted air fuel ratio on wide open throttle.drives like a new car now. Change the plugs , you won't regret it, it WILL run better.
Melting Slicks
Joined: Aug 2005
Posts: 2,995
Likes: 61
From: Fort Wayne IN
I'm a very poor role model when it comes to mileage in my car as I'm pretty heavy with the left foot. I can watch the DIC readout go down to 4 mpg at full throttle. However, on the highway at around 1900 rpm my mpg will read around 29 -30. New plugs, good wires, recently serviced blackwing, catback and shorties.
Heel & Toe
Joined: Nov 2007
Posts: 19
Likes: 0
From: Derbyshire England
I reckon on about 25-35 mpg on a highway run and thats UK gallons.
Tank range is good for 450 miles
Pro
Joined: Apr 2005
Posts: 552
Likes: 0
From: TEMECULA CALIFORNIA
St. Jude Donor '06-'07-'08-'09
Correct Me If Im Wrong Guys.
If You Have An Auto, The Stock Gears Were 2:73. Most Forum Members Get 28-30 With That Set Up On Highway.
I Have The 3:15 Option And Get 25-27 On Highway If I Drive Conservatively. Check You Gears? You May Be Getting All That You Can Get.
If You Have An Auto, The Stock Gears Were 2:73. Most Forum Members Get 28-30 With That Set Up On Highway.
I Have The 3:15 Option And Get 25-27 On Highway If I Drive Conservatively. Check You Gears? You May Be Getting All That You Can Get.
Thread Starter
Instructor
Joined: Feb 2005
Posts: 215
Likes: 0
From: Los Angeles CA
hello,
well i'm gathering information from your feedback
1. I have runflats filled 30pps
2. I am light on my foot
3. I coast as much as I can but the problem in LA theres always someone on your *** and its hard to get away with coasting.
A) what is a "smith Driving system?"
B) Change the plugs, I will definately look into that.
C) What is a "black wing filter?" is that an air filter? will it help?
D) what did you mean (UWEBABY) by check your gears (sorry Im a layman)
well i'm gathering information from your feedback
1. I have runflats filled 30pps
2. I am light on my foot
3. I coast as much as I can but the problem in LA theres always someone on your *** and its hard to get away with coasting.
A) what is a "smith Driving system?"
B) Change the plugs, I will definately look into that.
C) What is a "black wing filter?" is that an air filter? will it help?
D) what did you mean (UWEBABY) by check your gears (sorry Im a layman)