The Dexron III transmission fluid is a synthetic blend. It is a long lasting, but will not give extended drain intervals like some of the newer synthetics that are now available on the market.

It has passed the GM Total Base Number (TBN) requirements of 9.0 mg KOH / gm.

Dexron 3 has been tested and passed the GM Total Base Number (TBN) requirements of 9.0 mg KOH / gm. TBN is a measure of a lubricant’s ability to counteract acids that form during operation; it is measured by the amount of KOH required to neutralize the acid in the lubricant.

Dexron III was introduced by GM in 1967 to replace Dexron II. It is the first ATF to be manufactured using synthetic base oil and contains additives to minimize wear on synchronizers, clutches and bands.

Dexron III is a Gear Lube and Type A, Suffix A Automatic Transmission Fluid (ATF). It is acceptable for use in vehicles equipped with both manual transmissions or automatic transmissions having electronic controls that require ATF.

Dexron 3 Transmission Fluid is a fluid that lubricates your transmission. Transmission fluid improves the performance of your vehicle by reducing friction between the gears and bearings in your transmission. The more efficiently you can transfer power from one gear to another, the faster your car will be able to operate.
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