Suppressor Baffles Dexron-Iii License Number Had

Dexron-III is considered to be backward compatible with other versions of Dexron, meaning it can be substituted for Dexron-II and other older versions of the fluid.

However neither version of the transmission fluid is currently manufactured or marketed, and the most current version, Dexron-VI, is used in a backward-compatible fashion with GM cars that require either Dexron-II or Dexron-III.

This reflected the public trend toward natural ingredients that became popular in the 1970s.

Subsequent versions of Dexron-II were released to compensate for the issues caused by the use of inferior ingredients in the original Dexron-II, including Dexron-IID and Dexron-IIE.

Only one version of Dexron-III was ever marketed after it hit the market in 1993, and it was replaced by Dexron-VI in 2005.

Some replacements for Dexron-III may be available on the market today, but these products are not officially approved by the General Motors Company.

Suppressor Baffles Dexron-Iii License Number Had

The license number had to be displayed on the fluid container. 4 As a result, qualified GM automatic transmission fluid was made available at retailers and service garages everywhere.

The name is a registered trademark (later becoming a brand ) of GM, which licenses the name and specifications to companies which manufacture the fluid and sell it under their own brand names.

Not all Dexron fluids are licensed for reselling under another brand name.

If no license number or Dexron Approved logo is found on the container, the fluid may not be GM approved and the fluid cannot be guaranteed to meet GM specifications.

GM, like many automobile manufacturers, uses transmissions sourced from other suppliers or transmission manufacturers around the world; these transmissions are not manufactured by GM.

Many of these automatic transmissions use unique fluids that might not be shown on this page.

GM has upgraded the Dexron specifications over the years; the newer fluids are not always backward compatible with previous fluids.

Newer 6, 8, 9, and 10-speed transmissions as well as Plug-In Hybrid (PHEV), and Electric Vehicle (EV) transmission technologies require specialized fluids to operate properly.

There remains a market for older fluids that claim to meet the earlier fluid specifications.

See the details below for backward compatibility of each fluid.

The Automatic Safety Transmission used the same seasonal grade of motor oil as the engine for lubrication and hydraulic functions.

The transmission was called the Automatic Safety Transmission (AST) because the clutch operation was reduced to one-third of that required by a conventional transmission.

The clutch was only necessary when starting or stopping the car.

In low range, the transmission would shift from 1st to 2nd gear and then hold in 2nd.

In High range, the transmission would start in 1st gear, jump to 3rd, then shift to 4th gear.

The Hydra-Matic Drive used a specialized lubricant called GM Transmission Fluid No.

By using the term Fluid rather than Oil they hoped to discourage the previously accepted practice of using S.A.E 20 engine oil.

This fluid was composed of a Group 1 base oil and additives to reduce oxidation, foaming, rust, corrosion, varnish, and sludge build-up.

This was the worlds first automatic transmission fluid designed for the worlds first mass-produced automatic transmission.

The Hydra-Matic drive fluid was only available at GM dealerships.

As a result, regular S.A.E.

Engine oil was only approved as a temporary fill fluid and led to transmission problems.

Lid. GM License No.

AQ-ATF-102.

The GM ATF committee established fluid specifications and a qualification procedure to eliminate the unsatisfactory fluids and at the same time provide the car owner with a means of identifying qualified fluids.

The GM ATF Committee released a new Type A fluid specification.

GM partnered with the Armor Research Foundation for fluid and qualification testing.

Fluids that met the GM qualification requirements were issued an Armor Qualification (AQ) license number of AQ-ATF-xxx.

The license number had to be displayed on the fluid container.

As a result, qualified GM automatic transmission fluid was made available at retailers and service garages everywhere.