Gas gauge issue
Team Owner
Joined: May 2001
Posts: 25,058
Likes: 1,265
From: Virginia
St. Jude Donor '11
Race Director
Joined: Oct 2004
Posts: 12,864
Likes: 4,667
Team Owner
Joined: Jul 2006
Posts: 22,800
Likes: 485
From: Douglas County WI
Techron worked for me too. Double dose in full tank and let it sit all winter. Now use a bottle every other tankful, and only fill the tank to 1/4 for winter storage.
Last edited by glbeauchamp; Jun 29, 2021 at 11:09 AM.
Le Mans Master
Joined: Dec 2017
Posts: 5,602
Likes: 3,322
From: Virginia
2021 C5 of the Year Finalist - Modified
St. Jude Donor '21-'22
Techron is great stuff. I have some in my tank right now. It may take a few bottles to fully solve your issue. Be patient. Also as a side note, you can have too much of a good thing. Per the makers of Techron, you should not use more than 5 bottles between oil changes. Doing so can damage the inside of your gas tank.
Administrator
Joined: Mar 2001
Posts: 368,343
Likes: 24,781
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '26
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
Techron works and then be sure to use a Top Tier brand for fill ups.
Melting Slicks
Joined: Sep 2012
Posts: 2,222
Likes: 798
From: Fort Myers Beach Florida
Techron is magic. On the first sign of a problem a 20 ounce bottle in my 3/4 tank fixed it in 3 miles. A few years later it took several heavy doses and over a week. I now use it every six months plus during storage
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
Team Owner
Joined: May 2001
Posts: 25,058
Likes: 1,265
From: Virginia
St. Jude Donor '11
Techron is great stuff. I have some in my tank right now. It may take a few bottles to fully solve your issue. Be patient. Also as a side note, you can have too much of a good thing. Per the makers of Techron, you should not use more than 5 bottles between oil changes. Doing so can damage the inside of your gas tank.
Le Mans Master
Joined: Jul 2010
Posts: 6,013
Likes: 726
Techron is great stuff. I have some in my tank right now. It may take a few bottles to fully solve your issue. Be patient. Also as a side note, you can have too much of a good thing. Per the makers of Techron, you should not use more than 5 bottles between oil changes. Doing so can damage the inside of your gas tank.
this is funny. u know most guys around here change their oil between 2k and 3k.
Le Mans Master
Joined: Jul 2010
Posts: 6,013
Likes: 726
Racer
Joined: Sep 2013
Posts: 294
Likes: 284
From: Snohomish, WA
St. Jude Donor '21-'22-'23
Team Owner
Joined: May 2001
Posts: 25,058
Likes: 1,265
From: Virginia
St. Jude Donor '11
But they do not tell you what could happen if you do use too much ??? Ack
"APPLICATIONS Techron® Concentrate Plus, Complete Fuel System Cleaner, is designed for gasoline carbureted or fuel injected spark ignition engines. To keep the entire fuel system clean, use Techron Concentrate Plus, Complete Fuel System Cleaner, every 3,000 miles (4,800 km) or at scheduled oil change intervals, not to exceed twice per oil change"
Good info find ericba...
Le Mans Master
Joined: Jul 2010
Posts: 6,013
Likes: 726
Wow...i would not have believed it if i didn't see it with my own eyes...
But they do not tell you what could happen if you do use too much ??? Ack
"APPLICATIONS Techron® Concentrate Plus, Complete Fuel System Cleaner, is designed for gasoline carbureted or fuel injected spark ignition engines. To keep the entire fuel system clean, use Techron Concentrate Plus, Complete Fuel System Cleaner, every 3,000 miles (4,800 km) or at scheduled oil change intervals, not to exceed twice per oil change"
Good info find ericba...
But they do not tell you what could happen if you do use too much ??? Ack
"APPLICATIONS Techron® Concentrate Plus, Complete Fuel System Cleaner, is designed for gasoline carbureted or fuel injected spark ignition engines. To keep the entire fuel system clean, use Techron Concentrate Plus, Complete Fuel System Cleaner, every 3,000 miles (4,800 km) or at scheduled oil change intervals, not to exceed twice per oil change"
Good info find ericba...
1st Gear
Joined: Apr 2021
Posts: 1
Likes: 0
From: Martinsville, Virginia
what does changing oil got to do with the fuel tank? Mine seems to go bonkers at 3/4. I just plug in a scanner, clear the no codes and go on about my business. been using the complete fuel system in the tank, and still waiting for the magic. 
OUCH !
Race Director
Joined: Oct 2004
Posts: 12,864
Likes: 4,667
Amazing that a year ago 2 bottles of Techron cost as much as a half tank of gas, and now the cost of 2 bottles wong even buy a 1/4 tank, by Joe!!Last edited by grinder11; Jul 4, 2021 at 02:50 PM.
Team Owner
Joined: Dec 1999
Posts: 174,312
Likes: 1,217
From: Here
Pilot of Beer Force 1
Tampa Regional Coordinator
CI 4-5-6-7-8 Veteran
Organizer St. Jude Fundraiser
I believe in the Beer Fairy
if you need to change the sending unit you can DIY in the garage just make sure you order a new seal and run the car low on gas so you don't make a big mess.....takes about an hour or so