- Automatic transmissions are less expensive to maintain. They offer a more engaging driving experience. Disadvantages of Automatic Transmission. Like a CVT, an automatic transmission also has some.
- It’s no secret that the GM 8-speed transmission is not great. Also known as the 8L90 and 8L45, the 8-speed pairs to rear-wheel-drive architectures in GM’s bread-and-butter products, including.
- Toyota Automatic Transmission Fluids (ATF) The original Toyota Type-T transmission fluid was not introduced until 1988. Over the years, the original specification was supplanted by Type T-II, Type T-IV, and the WS fluid, which is the latest fluid.
- 8 Speed Automatic Transmission Vs 6 Speed
- 8 Speed Automatic Transmission Fluid
- 8 Speed Automatic Transmission Problems
A carry over of the C6 3 speed automatic transmission, the E4OD and later the 4R100 provided an electronic 4 speed with overdrive transmission. E4OD was used primarily in the heavy duty applications such as the Ford Bronco and Ford F-Series. Weber State University (WSU) - Automotive Technology Department - Transmission Lab. This episode demonstrates the components and operation of the ZF 8HP 8-sp.
Toyota markets their own automatic transmission fluids under the Toyota brand name.[1] Toyota does not license their automatic transmission fluid specifications to companies who wish to manufacture the fluid and sell it under their own brand names. Toyota dealerships and online retailers sell the Toyota branded fluids today. If the official Toyota logo is not found on the container, the fluid may not be Toyota approved and the fluid cannot be guaranteed to meet Toyota specifications
Toyota Automatic Transmission Fluids (ATF)[edit]
The original Toyota Type-T transmission fluid was not introduced until 1988. Over the years, the original specification was supplanted by Type T-II, Type T-IV, and the WS fluid, which is the latest fluid. Toyota has upgraded the ATF specifications over the years; the newer fluids are not always backward compatible with previous fluids. Newer 6, 8, and 10-speed transmissions as well as Hybrid-Electric (HEV), Plug-In Hybrid (PHEV), CVTs, 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.
Before Toyota ATF - 1959 - 1988[edit]
1959 - GM Type 'A' Suffix 'A' Fluid[edit]
In 1957, General Motors (GM) released a new Type 'A' Suffix 'A' fluid specification.[2] This fluid was better suited for the higher fluid temperatures caused by the unique torque converters and higher power engines of the day. The fluid specification was revised again in 1958, 1959, and 1960.
In 1959, Toyota adopted the GM Type 'A' Suffix 'A' fluid specification. Toyota recommended the following brands of Type 'A' Suffix 'A' fluids:
- British Petroleum (BP) ATF Type 'A' Suffix 'A' fluid
- Caltex Texamatic Type 'A' Suffix 'A' fluid
- Esso Standard ATF Type 'A' Suffix 'A' fluid
- Mobil Mobilfluid 200 Type 'A' Suffix 'A' fluid (see photos)
- Shell Donax T-6 Type 'A' Suffix 'A' fluid
This fluid was first used in the 1962 Toyota Corona (RT40, RS43L, MS43L, RT43L) used the following transmissions:
- 1959 A10 2-Speed Toyoglide Semi-Automatic transmission (Toyota's first semi-automatic transmission)
- 1962 A20 2-Speed Toyoglide Automatic transmission (Toyota's first fully automatic transmission)
1966 - Ford Type-F Fluid[edit]
In 1966, Toyota adopted the Ford Type-F (M2C33-F) fluid specification.[3] This upgraded fluid had improved low-temperature viscosity to provide for adequate shifting times in low temperatures. The fluid also had better oxidation resistance characteristics which resulted in longer fluid life.
Toyota recommended the following brands of Ford Type-F fluids:
- Castrol TQ Type-F
- British Petroleum (BP) ATF Type-F
- Caltex Texamatic Fluid Type-F (see photo)
- Esso Standard Glides
- Mobil Mobilfluid 210 ATF
- Shell Donax T-7
- White Rose Type 7 ATF
This fluid was first used in the 1967 Toyota Crown and Corona Mark II with the following transmission:
- 1967 A30 3-Speed Toyoglide transmission.
1969 - GM Dexron (B) Fluid[edit]
In 1968, Toyota adopted the GM Dexron (B) fluid specification.[4] This upgraded fluid had improved low-temperature viscosity to provide for adequate shifting times in low temperatures. The fluid also had better oxidation resistance characteristics which resulted in longer fluid life. Toyota became a licensed reseller of the GM Dexron (B) fluid; it was marketed under the Toyota brand name.
This fluid is backward compatible with all Type 'A' Suffix 'A', but not Ford's Type-F fluid.
This fluid was first used in the following transmissions:
- 1970 Toyota A32 3-Speed Electronically Controlled Automatic Transmission (EAT) RWD.[5]
- 1972 Toyota A40 (Developed with Borg-Warner Co.) (AW) 3-Speed RWD
1973 - Dexron II(C) Fluid[edit]
In 1973, Toyota adopted the GM (MS-7176) with GM Dexron-II(C). This upgraded fluid had new oxidation and rust inhibitors to replace the previous sperm whale oil additive. The fluid also had better oxidation resistance characteristics which resulted in longer fluid life. Toyota became a licensed reseller of the GM Dexron-II(C) fluid; it was marketed under the Toyota brand name. This fluid superseded the previous fluid.
1975 - Dexron II(D) Fluid[edit]
In 1975, Toyota adopted the GM (GM6032M) with GM Dexron-II(D) fluid specification. The fluid had better oxidation resistance characteristics which resulted in longer fluid life. Toyota became a licensed reseller of the GM Dexron-II(D) fluid; it was marketed under the Toyota brand name. This fluid superseded the previous fluid.
This fluid was first used in the following transmissions:
- 1977 Toyota A40D 4-speed AT with Overdrive RWD (A World's First)[6]
- 1979 Toyota A55 3-Speed FWD
- 1980 Toyota A43DL 4-Speed RWD w/TCC
- 1981 Toyota A43DE 4-Speed w/TCC World's first microcomputer-controlled RWD AT[7]
- 1982 Toyota A140L/A140E World's first FWD 4-Speed w/TCC ATX - Camry[8]
- 1984 Toyota A340L 4-speed AT for trucks
- 1984 Toyota A340H Electronic controlled AWD RWD 4-Speed w/TCC
- 1989 Toyota A341E Electronic controlled RWD 4-Speed w/TCC
NOTICE: The Dexron-II(D) fluid was superseded by the GM Dexron-III(H) fluid specification in 2002. (See Toyota Technical Service Bulletin TC001-02)
Toyota ATF 1988 - Today[edit]
1988 - Type T Fluid[edit]
In 1988, Toyota released their first automatic transmission fluid specification; Toyota Type T Fluid (See Toyota TSB Volume 9-10 04-10-1988.)
This fluid was first used in the following transaxles:
- 1988 A241H AWD transaxle in the Corolla
- 1988 Toyota A540H Electronic controlled AWD[9] 4-Speed transaxle w/TCC
- 1992 Toyota A341H Electronic controlled AWD 4-Speed w/TCC.
This fluid is not backward compatible with any previous Toyota recommended fluid.
1993 - Type T-II Fluid[edit]
1993 Toyota made several changes to their transmission fluid recommendations:
- Toyota released the Type T-II ATF High-Performance Fluid Specification for A340Ei in 1993 Turbo Supra and others.
- Replaces Dexron II(E) with Dexron III(G).
This fluid is not backward compatible with the previous Type T fluid.
This fluid was first used in the following transmissions:
- 1993 Toyota A340Ei Electronic controlled RWD 4-Speed w/TCC – Turbo Supra
- 1996 Toyota A350E Electronic controlled RWD 5-Speed w/TCC – Lexus GS300
1995 - Type T-III Fluid[edit]
In 1994-1995, some early OBD-II phase-in vehicles experienced a P0300 DTC (Random Misfire). Engineers determined that road forces being transferred through the Torque Converter Clutch (TCC) was affecting the normal rotational fluctuations of the crankshaft and tricked the ECM into thinking there was a cylinder misfire.
The solution was to create a new kind of TCC that would normally slip around 35 rpm. Toyota called theirs a Slip Controlled Lock-Up Clutch (SCLC), other manufacturers had their own names. Some SCLC systems had a shudder or vibration during normal operation. Engineers tried several computer calibration changes, but a revised fluid was also needed to address the issue.
- Toyota released the Type T-III ATF in 1995[10][11]
- Ford released the new Mercon V fluid specification in 1996
- GM released the Dexron-III (G) fluid specification in 1998
- Chrysler released the MS-9602 Change C fluid specification (MS-9602) in 1998.[12]
1998 - Type T-IV Fluid[edit]
In 1998, Toyota releases the Genuine ATF Type T-IV Fluid Specification (JWS3309). This fluid was the Next Generation High-Performance ATF for Slip-Controlled Automatic Transmissions.[13] This fluid replaces Type T-III, Type T-II and Type T fluids in all vehicles. All vehicles produced after 1993 with Automatic Transmissions specified to use ATF Type T, T–II and T–IV. (See Bulletin TC003–99).[14] Do not confuse this fluid with Chrysler's Mopar ATF+4, they are not interchangeable.
NOTICE:
- Type T-IV fluid is backward compatible with the previous Type T fluid.
- Type T-IV can replace Type T-II fluids; however, they should not be mixed.
This fluid was first used in the following transmissions:
- 1998-2003 Toyota P111 Hybrid Transaxle[15]
2002 - WS Fluid[edit]
In 2002, Toyota releases the Genuine ATF WS (World Standard) Fluid Specification (JWS3324 or NWS9638).[16][17] This fluid is not backward compatible with previous Toyota fluids or Dexron fluids. Almost all 2004 and above Toyota vehicles with automatic transmissions use the WS fluid specification. This fluid absorbs moisture and should never be reused. Always use fluid from an unopened container. See Toyota bulletin T-SB-003-11
Toyota asserts that under normal usage, the fluid has a 160,000 km (100,000 miles) maintenance interval for inspection only; ATF-WS does not require any flushing or changing during the life of the vehicle; however, an inspection of the maintenance schedule of many Toyota vehicles reveals that there is a 100,000 km (60,000 miles) replacement interval if the vehicle is used on short trips, city driving, hauling heavy loads, trailer towing, or using a car-top hauler. Check your own maintenance schedule for your vehicle's requirements.
This fluid is not backward compatible with any previous Toyota recommended fluid.
This fluid was first used in the following transmissions:
- 2004 Toyota P112 Hybrid Transaxle[18]
- 2006 AB60E 6-speed transmission
- 2006 U660E 6-speed transaxle
- 2007 AA80E 8-speed automatic (World's first 8-speed light duty transmission)8[19]
- 2017 AGA0E 10-Speed Transmission[20]
2011 - CVT Fluid TC[edit]
In 2011, Toyota released the CVT fluid TC fluid specification for Continuously Variable Transmissions (CVT).
This fluid was first used in the following transmission:
- 2012-2013 K41B (Scion IQ)
2013 - CVT Fluid FE[edit]
In 2013, Toyota released the CVT fluid FE fluid specification for Continuously Variable Transmissions (CVT).
This fluid was first used in the following transmissions:
- 2013 K313 (Corolla)
- 2014 K41B (Scion IQ)
- 2017 K114 (C-HR)
- 2017 K312 (Yaris Thailand, Rumion 2013)
- 2020 K120 (Corolla)
Toyota 'Lifetime' ATF[edit]
Example Maintenance Schedules[edit]
| Toyota ATF Change Interval under 'Normal Driving' Conditions* | ||||
|---|---|---|---|---|
| Fluid Specification | Miles | |||
| 1959 GM Type 'A' Suffix 'A' | 15,000 | |||
| 1966 Ford Type-F | 24,000 | |||
| 1967 GM Dexron (B) | 24,000 | |||
| 1973 GM Dexron-II(C) | 50,000 | |||
| 1975 GM Dexron-II(D) | 50,000 | |||
| 1988 Type T | 50,000 | |||
| 1993 Type T-II | 50,000 | |||
| 1995 Type T-III | 50,000 | |||
| 1998 Type T-IV | 100,000 | |||
| 2002 WS | 120,000 | |||
| *See your vehicle maintenance guide for definition of 'Normal Driving' conditions and recommended service interval | ||||
| Toyota ATF Change Interval under 'Special Operating' Conditions* | ||||
|---|---|---|---|---|
| Fluid Specification | Miles | |||
| 1959 GM Type 'A' Suffix 'A' | 7,500 | |||
| 1966 Ford Type-F | 12,000 | |||
| 1967 GM Dexron (B) | 12,000 | |||
| 1973 GM Dexron-II(C) | 25,000 | |||
| 1975 GM Dexron-II(D) | 25,000 | |||
| 1988 Type T | 25,000 | |||
| 1993 Type T-II | 25,000 | |||
| 1995 Type T-III | 25,000 | |||
| 1998 Type T-IV | 30,000 | |||
| 2002 WS | 60,000 | |||
| *See your vehicle maintenance guide for definition of 'Special Operating' conditions and recommended service interval | ||||
Toyota Lifetime automatic transmission fluids made from higher quality base oil and an additive package are more chemically stable, less reactive, and do not experience oxidation as easily as lower quality fluids made from lower quality base oil and an additive package. Therefore, higher quality transmission fluids can last a long time in normal driving conditions (Typically 120,000 miles (193,121 km) or more).
The definition of 'Lifetime Fluid' differs from transmission manufacturer to transmission manufacturer. Always consult the vehicle maintenance guide for the proper service interval for the fluid in your transmission and your driving conditions.
2018 Camry Example[edit]
According to the Scheduled Maintenance Guide of a 2018 Toyota Camry with WS 'Lifetime Fluid' and an 8-speed automatic transmission, the automatic transmission fluid never needs to be changed under 'Normal' driving conditions; however, there are Additional Maintenance Items for Special Operating Conditions:[21]
Normal Driving
- Carry passengers and cargo within recommended limits on the Tire and Loading Information label
- Driven on reasonable road surfaces within legal driving limits.
Under 'Normal' driving conditions, the automatic transmission fluid never needs to be changed.
Special Operating Conditions
- Driving while towing
- Using a car-top carrier
- Heavy vehicle loading
- Extensive idling and/or low speed driving for a long distance such as police, taxi or door-to-door delivery use.
Under 'Special Operating Conditions', replace automatic transmission fluid and filter every 60,000 mi (96,560 km) or 72 Months.
2018 Tacoma Example[edit]
According to the Scheduled Maintenance Guide of a 2018 Toyota Tacoma with WS 'Lifetime Fluid' and an 6-speed automatic transmission, the automatic transmission fluid never needs to be changed under 'Normal' driving conditions; however, there are Additional Maintenance Items for Special Operating Conditions:[22]
Normal Driving
- Carry passengers and cargo within recommended limits on the Tire and Loading Information label
- Driven on reasonable road surfaces within legal driving limits.
Under 'Normal' driving conditions, the automatic transmission fluid never needs to be changed.
Special Operating Conditions
- Driving while towing
- Using a car-top carrier
- Heavy vehicle loading
- Extensive idling and/or low speed driving for a long distance such as police, taxi or door-to-door delivery use.
Under 'Special Operating Conditions', replace automatic transmission fluid and filter every 60,000 mi (96,560 km) or 72 Months.
See also[edit]
8 Speed Automatic Transmission Vs 6 Speed
References[edit]
- ^https://mafiadoc.com/automatic-transmission-fluid-requirements-t-tc001-02-toyota-parts_5a1671c01723ddf8dce3c2e3.html 2002 Toyota Technical Service Bulletin T-TC001-02 Automatic Transmission Fluid Requirements
- ^https://www.sae.org/publications/technical-papers/content/600069/ DEVELOPINGTRANSAXLEFLUID
- ^'Type F Automatic Transmission Fluid and Power Steering Fluid'.
- ^https://www.sae.org/publications/technical-papers/content/680038/ DexronAutomatic Transmission Fluid
- ^http://www.retrojdm.com/ScanView.asp?ScanID=56 TOYOTA CORONA BROCHURE 1971.11 - EAT AUTO TRANSMISSION
- ^https://www.sae.org/publications/technical-papers/content/780097/ Toyota Four-Speed Automatic Transmission with Overdrive
- ^https://www.sae.org/publications/technical-papers/content/820740/ Toyota Computer Controlled Four-Speed Automatic Transmission
- ^https://www.sae.org/publications/technical-papers/content/840049/ Toyota New Four-Speed Automatic Transmission for Front Wheel Drive Vehicles
- ^https://www.sae.org/publications/technical-papers/content/890526/ Toyota EC-HYMATIC – A New Full Time 4WD System for Automatic Transmission
- ^https://www.sae.org/publications/technical-papers/content/952348/ Development of Automatic Transmission Fluid for Slip-Controlled Lock-Up Clutch Systems
- ^https://www.sae.org/search/?qt=972927 Next Generation High Performance ATF for Slip-Controlled Automatic Transmission
- ^'Chrysler transmission fluids: 7176, ATF+3, ATF+4'. www.allpar.com. Retrieved 2019-02-01.
- ^https://www.sae.org/search/?qt=972927 Next Generation High-Performance ATF for Slip-Controlled Automatic Transmission
- ^https://www.scionlife.com/misc/tc003t99.pdf Toyota Technical Service Bulletin TC003–99, Automatic Transmission fluids
- ^https://www.youtube.com/watch?v=roLqayjWpb0 1st Generation Prius Transaxle - P111
- ^https://www.sae.org/publications/technical-papers/content/2003-01-3258/ Development of New Automatic Transmission Fluid for Fuel Economy
- ^https://www.toyoheadquarters.com/threads/toyota-ws-world-standard-automatic-transmission-fluid.1432 Toyota Technical Service Bulletin T-SB-0006-11 Revision 1, Toyota (WS) World Standard Automatic Transmission Fluid/
- ^https://www.youtube.com/watch?v=ia6jJO3cuOY 2nd Generation Prius Transaxle - P112
- ^https://www.youtube.com/watch?v=QhIcVM9-F3I World's First 8-Speed Automatic Transmission - AA80E
- ^https://www.sae.org/publications/technical-papers/content/2017-01-1099/ Development of Innovative Toyota 10-Speed LongitudinalAutomatic Transmission
- ^https://www.toyota.com/owners/resources/owners-manuals/camry/2018 Manuals & Warranties
- ^https://www.toyota.com/owners/resources/owners-manuals/tacoma/2018 Manuals & Warranties
8 Speed Automatic Transmission Fluid
External links[edit]
For what seemed like many years, the 6-speed transmission was the most common engine used in cars up until a few years ago. Way back when, between 1920-1980, 1- and 2-speed transmissions were used, then 3-4 speed. In the 1990s, we had 5-and 6-speed transmissions, and during the 2000s, we progressed to 7- and 8-speed transmissions.
Not all cars are being made with 8-speed but many car manufacturers are moving to it because it has improved fuel consumption and also reduced CO2 output.
If we continue with 2 new speeds every decade, we’ll see a continued uphill trend and eventually a plateau. Many electric cars don’t even have transmissions but that may change soon. Regardless, moving from gas to all-electric cars would take years and years of transitioning among all drivers across the world.
Improvements With 8-Speed Transmissions
More gears means a larger overall ratio spread and a smaller ratio spread between gears. This means that acceleration improves for a quieter drive and the engine works at its most optimal power level. A tricky part of this is fitting more gears in smaller engine spaces so the transmission for a truck has more room to spread than the engine for a little Fiat. As a result, some small cars are stuck with the last decade’s number of speeds in their transmission.
Better Transmissions, More Sales
8 Speed Automatic Transmission Problems
Some critics complain that cars are the same as a decade ago plus some fancy new options like Pandora radio. However, sticking with the same game plan not only stalls innovation, but it also stalls car sales too. Lately, there is more focus on safety features to reduce accidents and injuries. And since flying cars still aren’t an option to the majority, having a more powerful and smoother ride is.
GM and Ford worked together to research and develop an 8-speed transmission to reduce their investment risk but engineer a better one. BMW has it in their 5 series with them and many trucks get the upgrade. Part of the drive to upgrade is to meet federal fuel economy regulations.
Fuel Efficiency Standards
Under the direction of President Obama, the National Highway Traffic Safety Administration (NHTSA) moves into phase 2 of improving fuel efficiency and greenhouse gases for medium- and heavy-duty vehicles for model years 2014-2018. These must achieve a 15% reduction by the model year 2018 and potentially one gallon of gas per 100 miles driven.
Part of this is to reduce independence on foreign oil. Another way to reduce independence was the approval to do ultrasonic blasts up and down the east coast to search for oil wells, which is questionable to the welfare of the ecosystem in the region. Long-term goals are to get new and light truck fuel efficiency up to 54.5 miles per gallon by 2025 so expect transmissions to continue evolving.
Improving the fuel efficiency of your car comes from keeping up with maintenance schedules and driving kindly without overworking the transmission. Keeping the oil, filter, and air filters clean are great steps to take to ensure the longevity of your car. Flushing the transmission fluid and keeping the wheels rotated, balanced, and aligned also help in the long run. Schedule an Appointmentwith your local AAMCO Colorado storefor any repairs or maintenance you need or send us any questions online Ask a Mechanic.