Jim Carter's Old Chevy Trucks - Classic Chevy & GMC Truck Parts for all of your restoration needs! 1000's of parts in stocks now!

Gas Tanks

Gas Tank Baffles

Wednesday, November 16th, 2016

For the many people that have not seen a gas tank baffle, this should be of interest. These are usually flat metal dividers welded inside a fuel tank. They slow the side to side movement of the fuel. Numerous openings between the welded dividers cause a slower movement of fuel. See Photo.

Baffle Trivia!

1. All tanks in a vehicle that moves must have baffles so a sudden sharp turn or stop does not cause all the liquid contents to instantly surge to one side of the tank.

2. The surge of fuel can even uncover the low filled fuel tank’s pickup inlet so the engine hesitates or stops.

3. Noise of fuel moving from side to side can create an annoying sound if near the passenger area.

4. On early vehicles the fuel can be forced out of the fill inlet to drip on exterior paint or running boards.

5. Example of a non-baffle moving tank with liquid inside: Ever been behind a yard spraying truck moving in a neighborhood? The liquid fertilizer or insecticide freely moves from side to side
as the translucent plastic storage tank is moved on the side streets.

test
1937 Chevy truck tank cut in half showing one baffle

Economical Gas Tank Cleaning

Friday, July 19th, 2013


We recently had a local radiator repair shop clean the rust from an older used gas tank.  They submerged it in a cleaning acid tank overnight.  The price was $65.00.  WOW!   Several months later we discovered an “old school” method that would have cost about $1.00.  Oh well, we live and learn.

Back in the days of the Great Depression money was a scarce commodity and economical methods in life were used or otherwise things probably did not get done.  It was discovered that agricultural molasses (not what you buy in the grocery store) mixed with four parts water removed rust.  Fill your tank with this combination and wait about a week.  Surprise!  Your gas tank is shiny clean inside.

You can even put a lid on a five gallon bucket from a hardware store and small parts covered with this formula will have all the rust removed in less than a week.

Agricultural molasses is used to mix with livestock feed.  It causes farm animals to eat otherwise less desirable feeds because of its attractive sweet taste.

Retail price at a livestock feed store is about $2.00 for 10 pounds.

This data is provided by MIKE RUSSELL of COLUMBIA, MISSOURI.

Another cleaning Technique!

Several years ago, we heard of a gas tank cleaning method that cleans most tanks every time and its FREE!

Attach the gas tank to a farm tractor large rear wheel before a day in the field.  Add about a pint of ¼” gravel.  The slow rotation of the large wheel will move the gravel continually inside the old tank.  Sometimes even by noon, the rust is all removed as the gravel continually moves inside the tanks. Just pour out all contents and the tank is cleaned!