Gas mileaged increased
Thread Starter
Drifting
Joined: May 2004
Posts: 1,536
Likes: 0
From: Bristol CT
Gas mileaged increased
Welp,
about 99% of the time i use Mobil/Exxon gas 93oct....i was getting between 18.5 18.9mpg driving the way i always do...."spritual"....
Well i decided to give Shell Vpower gas 93oct a chance so last week i filled the tank...i did not change my driving habbits whats so ever..and now i am up to 20.4mpg
Discusss....
about 99% of the time i use Mobil/Exxon gas 93oct....i was getting between 18.5 18.9mpg driving the way i always do...."spritual"....
Well i decided to give Shell Vpower gas 93oct a chance so last week i filled the tank...i did not change my driving habbits whats so ever..and now i am up to 20.4mpg
Discusss....
Race Director
Joined: Sep 2004
Posts: 13,793
Likes: 0
From: St. Peters MO Sometimes you have to prove yourself by doing alot of killing or alot of dying...
There are WAY toooooooo many factors to contribute to gas mileage increase or decrease. It is hard to say... but there are some gas brands that peform much better than others. I have always had luck with Amoco Ultimate... I guess now BP.
Race Director
Joined: May 2001
Posts: 14,165
Likes: 9
Did you calculate that yourself or did you use the gas mileage readout on your dash?
Did you happen to have a tail wind last week when you ordinarily had a head wind?
Not trying to say that you didn't get an increase, rather that you would really need to qualify it with more data, long term averages mean a lot more than short term.
Did you happen to have a tail wind last week when you ordinarily had a head wind?
Not trying to say that you didn't get an increase, rather that you would really need to qualify it with more data, long term averages mean a lot more than short term.
Melting Slicks
Joined: Sep 2005
Posts: 2,773
Likes: 31
From: Centerville Utah
St. Jude Donor '06
Maybe Shell adds acetone 
http://forums.corvetteforum.com/show...07&forum_id=34
Sorry, couldn't resist
http://forums.corvetteforum.com/show...07&forum_id=34
Sorry, couldn't resist
Race Director
Joined: May 2001
Posts: 14,165
Likes: 9
Originally Posted by SledUtah
Maybe Shell adds acetone
http://forums.corvetteforum.com/show...07&forum_id=34
Sorry, couldn't resist
http://forums.corvetteforum.com/show...07&forum_id=34
Sorry, couldn't resist
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
Drifting
Joined: May 2004
Posts: 1,536
Likes: 0
From: Bristol CT
Originally Posted by Nathan Plemons
Did you calculate that yourself or did you use the gas mileage readout on your dash?
Did you happen to have a tail wind last week when you ordinarily had a head wind?
Not trying to say that you didn't get an increase, rather that you would really need to qualify it with more data, long term averages mean a lot more than short term.
Did you happen to have a tail wind last week when you ordinarily had a head wind?
Not trying to say that you didn't get an increase, rather that you would really need to qualify it with more data, long term averages mean a lot more than short term.
Burning Brakes
Joined: Aug 2005
Posts: 772
Likes: 6
From: Huntsville AL
88 conv. 6 speed.
23 mpg from California to Alabama. Average 76 mph 92/93 octane fuel. Whatever brand was along the way.
New rotor, cap, plugs, wires, synthetic Mobile 1, remove and clean injectors, proper air in tires, clean tb, clean iac, gut air pump and remove hoses, TB coolant line bypass, new air filter, clean EGR valve
28 mpg interstate at 76 mph average.
24 mpg town.
Fuel - regular 87 octane - whatever brand is cheap (usually Race Trac)
Obviously going from premium to regular did the trick.
23 mpg from California to Alabama. Average 76 mph 92/93 octane fuel. Whatever brand was along the way.
New rotor, cap, plugs, wires, synthetic Mobile 1, remove and clean injectors, proper air in tires, clean tb, clean iac, gut air pump and remove hoses, TB coolant line bypass, new air filter, clean EGR valve
28 mpg interstate at 76 mph average.
24 mpg town.
Fuel - regular 87 octane - whatever brand is cheap (usually Race Trac)
Obviously going from premium to regular did the trick.
Melting Slicks
Joined: Dec 2004
Posts: 2,954
Likes: 2
From: Obama=death for America
I agree with the majority. There are far too many variations that can occur to cause the mileage difference. Passengers in the vehicle, wind speed (for or against), water in the gas, actual octane in the gas, grade the car was driven at, how much uphill or downhill driving, cruise control usage, and a lot more.
You would need to drive to the same places, the same time, in the same weather conditions, etc., numerous times, before you can come to the conclusion that it was the gas that increased your mileage.
You would need to drive to the same places, the same time, in the same weather conditions, etc., numerous times, before you can come to the conclusion that it was the gas that increased your mileage.
Racer
Joined: Jun 2004
Posts: 392
Likes: 7
From: Massachusetts
[QUOTE=thomastl]88 conv. 6 speed.
23 mpg from California to Alabama. Average 76 mph 92/93 octane fuel. Whatever brand was along the way.
New rotor, cap, plugs, wires, synthetic Mobile 1, remove and clean injectors, proper air in tires, clean tb, clean iac, gut air pump and remove hoses, TB coolant line bypass, new air filter, clean EGR valve
28 mpg interstate at 76 mph average.
24 mpg town.
Fuel - regular 87 octane - whatever brand is cheap (usually Race Trac)
6speed?
Didnt the ZF 6 speed come out in 89? Or did you do a swap?
23 mpg from California to Alabama. Average 76 mph 92/93 octane fuel. Whatever brand was along the way.
New rotor, cap, plugs, wires, synthetic Mobile 1, remove and clean injectors, proper air in tires, clean tb, clean iac, gut air pump and remove hoses, TB coolant line bypass, new air filter, clean EGR valve
28 mpg interstate at 76 mph average.
24 mpg town.
Fuel - regular 87 octane - whatever brand is cheap (usually Race Trac)
6speed?
Didnt the ZF 6 speed come out in 89? Or did you do a swap?
Burning Brakes
Joined: Aug 2005
Posts: 772
Likes: 6
From: Huntsville AL
Richmond Gear 6 speed.
4+3 went out on the previous owner and he swapped it rather than trying to rebuild.
Gas comes from one distributor is right but additives are put in depending on the station. Additives and exact fuel octane can vary which will cause small differences in fuel mileage. However, daily driving cannot accurately measure the difference since there are too many variables in daily driving. For example - on the last tank you were stopped by 400 redlights and on the next tank you only got stopped by 350 redlights that would make a difference due to the extra acceleration. Did you climb the same hill to and from the house exactly 50 times on both tanks. Etc.......
4+3 went out on the previous owner and he swapped it rather than trying to rebuild.
Gas comes from one distributor is right but additives are put in depending on the station. Additives and exact fuel octane can vary which will cause small differences in fuel mileage. However, daily driving cannot accurately measure the difference since there are too many variables in daily driving. For example - on the last tank you were stopped by 400 redlights and on the next tank you only got stopped by 350 redlights that would make a difference due to the extra acceleration. Did you climb the same hill to and from the house exactly 50 times on both tanks. Etc.......
Le Mans Master
Joined: Aug 2004
Posts: 6,479
Likes: 0
From: Ponte Vedra
Originally Posted by Vette73
My '90 was averaging 22.5 then my "TransAM" daughter took it out for a night and the average had dropped to 16.2 -- wonder how THAT happened? 
Drifting
Joined: Nov 2000
Posts: 1,428
Likes: 1
From: Jacksonville FL
Originally Posted by the blur
all gas comes from the same distrubutor. there is only 1 distrubutor in each state, except NY where there is 2. even the no name fuel comes from the same place.