![]() ![]() Advanced additives Modern additives protect against corrosion, oxidation, foam, and deposits. Performance levels GM Dexron III G Ford Mercon Allison C-4 Volvo 97325, 97335, 97340 ZF TE-ML 05L, 09, 11A, 11B Features & Benefits Increased protection Increased protection against wear and tear, also under high stress working conditions. The formulation based on the mineral base oil of Valvoline ATF DEX/MERC has high viscosity index which provides increased protection and lubrication of the automatic gearbox over a wide temperature range. Formulated to lubricate modern automatic transmissions running at higher temperatures. If you put off brand or "General" ATF in the transmissions, they will fail immediately or quite quickly because their properties don't fall within the engineered specification.Valvoline™ ATF DEX/MERC Automatic transmission fluid blended with mineral based oil for passenger cars. Their specific automatic transmission fluids are designed to work for the transmissions that the engineers built it for. Just as a side note, Honda/ Acura and Toyota are very much like this. The additives on Dexron-VI are probably specific to GM transmissions and hence why if you mix it with other fluids, they don't get along. When you take two chemicals and mix them inside of any moving component with heat, you will have a "science experiment" going on inside your Engine/ Transmission. If you mix an oil with another oil and emulsion occurs between the two oil's detergents it can create something of a secondary chemical reaction You could definitely have an issue if this occured. If the viscosity of the fluid you use is too great, or too low it will cause the transmission to fail because the hydraulic properties and lubricity change. When working with an automatic transmission, you have solenoids that actuate the shifting of gears. Just like motor oil, you have different chemicals and blends of synthetic oils with different detergents in them Transmission fluid can presumably be treated the same way.ĭexron-VI has a much lower viscosity right out of the bottle than other ATF or Dexron ATF's. ![]() Now anyone can create their own "Blend" of Dexron-VI. They lost the "Patent" to Dexron-VI in 2006. Let me explain why.ĭexron standards were created by GM. TIP: Simply topping off the fluid is adequate, but a full drain and replacement is preferred, to obtain the full benefit. DEXRON-VI is also compatible with any former version of DEXRON for use in automatic transmissions. But more important, earlier type fluids are NOT FORWARD COMPATIBLE with transmissions that were designed to use DEXRON-VI.ĭEXRON-VI can be used in any proportion in past model vehicles equipped with an automatic transmission, in place of DEXRON-III (for instance, topping off the fluid in the event of a repair or fluid change). IMPORTANT: As with previous upgrades, DEXRON-VI fluids are designed to be backward compatible with earlier transmission hardware. The upgrading process ensures that available service fill fluids are of an appropriate quality for use in transmissions that have been designed around the improved factory fill fluid performance. Since GM introduced the first service-fill specification for automatic transmission fluid (ATF) in 1949, it has been necessary periodically to upgrade the specification as part of a continuous improvement strategy. Here are some facts to help clear up these misunderstandings. 1) was introduced into production starting with 2006 model year vehicles (see bulletin 04-07-30-037D), there are still some misunderstandings about it.
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