Transmission Fluid — What is transmission fluid?

What is transmission fluid?

Transmission fluid is a lubricant that prevents wear on transmission parts. But it serves a second purpose, and that it to apply pressure to servos and clutch pack pistons to force clutch discs and bands to apply. To help with clutch and band application, car makers specify different friction modifying additives for their fluids.

What makes transmission fluid different from motor oil?

Transmission fluid has many of the same additives as motor oil like: anti-wear additives, rust and corrosion inhibitors, detergents, dispersants and surfactants. In addition, transmission fluid contains viscosity index improvers and modifiers, seal swell additives, anti-foam additives and anti-oxidation, cold-flow improvers, high-temperature thickeners, gasket conditioners, pour point depressant and dye.

What are the different types of transmission fluid?

Each car maker has their own recommended transmission fluid based on the individual transmission. Even though oil companies sell “universal” transmission fluids and transmission fluids that work in “all makes and models,” not a single car maker recognizes these universal fluids. In fact, if you compare the car maker’s fluid specifications to the specifications on the universal fluids, there is NO WAY a single universal fluid can possibly meet all car makers transmission fluid specifications. Some of the specifications are even mutually exclusive.

• ATF+4 The current transmission fluid for Chrysler products. Replaces ATF+3, ATF+2, ATF+

• DEXRON VI The most current transmission fluid for GM vehicles. It is backwards compatible with Dexron III/Mercon

• Mercon V The most current transmission fluid for most Ford, Mercury, Lincoln, and some Mazda vehicles

• Mercon LV The recommended transmission fluid for some Ford(DuratecHE) and Mazda vehicles

• Mercon SP – For the Ford 6R transmission

• Toyota ATF Type T-IV (T4) The fluid for some Toyota and Lexus vehicles. Replaces Type T, Type T-II and Type T-III.

• Toyota ATF WS The fluid for some Toyota and Lexus vehicles with CVT transmission.

• DW-1 The fluid for Honda and Acura (except CVT). Replaces Z1 specification fluid

• Diamond SP-III (or SP3) The fluid for Mitsubishi (including CVT’s), Hyundai and Kia 4-speed automatic transmission.

• Diamond SP-IV (or SP4) The fluid for Hyundai and Kia 6-speed automatic transmission.

• Nissan Matic The fluid for Nissan and Infiniti vehicles

Matic D is for 3- and 4-speed transmissions,

Matic K is for 5-speed front-wheel-drive transmissions,

Matic J is for 5-speed rear-wheel-drive transmissions,

Matic-S fluid supersedes Matic-J fluid.

• ATF-HP The fluid for some Subaru vehicles, except CVT transmissions. 2004 and earlier Subaru vehicles use Dexron III.

• Mazda M5 (MV) The fluid for the Mazda FN4A-EL/Ford 4F27E and Mazda FS5A-EL/Ford FNR5. Also sold as Ford FNR5 fluid. Genuine Mazda M5 is made by Idemitsu Corporation, available as Idemitsu Type-M.

• Mazda FZ fluid The fluid for the SKYACTIV-Drive. Color of this fluid is blue.

Can you use a universal or all makes and models transmission fluid?

NO! NEVER use a universal or all makes and models fluid in your transmission.

Can you mix transmission fluid types?

No

What causes transmission fluid to fail?

High heat caused by getting stuck and rocking the vehicle back and forth between drive and reverse. Neglecting recommended transmission fluid changes.

When to get a transmission fluid flush?

Most car makers do NOT recommend transmission fluid flushes! At best they recommend a drain and refill. In fact, many car makers have issued service bulletins warning their dealers NOT to recommend a transmission fluid flush as a routine service.

Follow the car makers’ maintenance manual for transmission fluid change intervals. Insist the shop uses the recommended fluid for the fluid change or flush.

Read this post on transmission fluid flushes

©, 2018 Rick Muscoplat

Posted on by Rick Muscoplat

Categories





Related pages


1995 ford ranger repair manualford spark plug thread repair kitpowerbuilt torque adapterford 5.4 engine diagramthrottle position sensor diagram2007 ford focus throttle bodyford 4.2l enginediagnose misfire96 audi cabrioletford focus alternator beltp0234vw coolant leakpt cruiser starter location2000 dodge caravan window motorford throttle body problemsparallelogram steering systemp0401 chevyhonda abs codes1997 ford expedition gem moduleheater core plugged upidler pulley diagram2000 chevy malibu wheel bearingfuel tank evaporator control2001 lincoln continental transmission problemsevaporative emission control system pressure sensoraudi a4 brakes and rotors costhow to check a egr valve is working2001 ford ranger heater coredpfe sensor f1502005 dodge durango batteryseafoam in engine2003 ford expedition batteryipr powerstroketrac off and abs light onp1777 nissan muranohonda crv window not workingsymptoms of a bad idler armford explorer blend door actuatorcracked timing beltdexcool recallford focus computer resetsubaru idle control valveford f250 trouble codesalero tracking2003 ford mustang catalytic converterpower steering fluid pt cruisersix cylinder firing ordertacoma p04202004 nissan xterra catalytic converterpo420 nissanford pinto firing order98 chevy cavalier fuel pumpwhat is passlock system2000 oldsmobile intrigue coolant reservoir1998 ford f150 spark plugskia sephia starter2007 pontiac g6 throttle body2005 ford explorer engine diagramhow to bleed air from power steering systemp0440 isuzu rodeosta-bil msdsford escape dpfe sensorford focus 2007 alternatorglow plug 7.3 dieseltcs switch2007 gmc yukon batteryacura tl window regulatorcodigo p0171 ford2003 pontiac grand prix catalytic convertergrand am passlockfiring order ford 4.0 v6ford five hundred throttle bodyoil filter wrench toyota