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API AUTOMOTIVE MANUAL TRANSMISSION & AXLES CLASSIFICATION
ﻒﻴﻨﺼﺘﺑ صﺎﺨﻟا يدﺎﺷرﻻا ﻲﻜﻳﺮﻣا لوﺮﺘﺒﻟا ﺪﻬﻌﻣ ﻞﻴﻟد
تارﺎﻴﺴﻟا روﺎﺤﻣو ﺔﻳوﺪﻴﻟا ﺔﻛﺮﺤﻟا ﻞﻘﻧ ةﺰﻬﺟأ تﻮﻳز
API GL-1 :API GL-1 ﻲﻜﻳﺮﻣا لوﺮﺘﺒﻟا ﺪﻬﻌﻣ ﺔﻔﺻاﻮﻣ
Designates the type of service characteristics of manual فوﺮﻇ ﺖﺤﺗ ﻞﻤﻌﺗ ﻲﺘﻟا ﺔﻳوﺪﻴﻟا ﺔﻛﺮﺤﻟا ﻞﻘﻧ ةﺰﻬﺟ ﺔﻣﺪﺨﻟا ﺺﺋﺎﺼﺧ عﻮﻧ دﺪﺤﺗ
transmissions operating under such mild conditions of low units تﺎﻋﺮﺴﻟ ﻰﻧدا ﺪﺤﻟاو تاﺪﺣﻮﻟا ﻰﻠﻋ ﺾﻔﺨﻨﻣ ﻂﻐﺿ تﻻﺪﻌﻣ تاذ ﺔﻟﺪﺘﻌﻣ ﻞﻴﻐﺸﺗ
pressures and minimum sliding velocities, that untreated oil may be ﺎﻤﻛ .ﻲﺿﺮﻣ ﻞﻜﺸﺑ ﺞﻟﺎﻌﻣ ﺮﻴﻐﻟا ﺖﻳﺰﻟا ﺎﻬﻴﻓ مﺪﺨﺘﺴﻳ نأ ﻦﻜﻤﻤﻟا ﻦﻣ ﻲﺘﻟاو قﻻﺰﻧﻻا
used satisfactorily. Oxidation and rust inhibitors, defoamers, and ﺔﺒﺴﻧ ﺾﻔﺨﻟو يوﺎﻏﺮﻟا ن ّ ﻮﻜﺗ ﻊﻨﻣو أﺪﺼﻟاو ةﺪﺴﻛا ﻊﻨﻣ تﺎﻧﻮﻜﻣ ماﺪﺨﺘﺳا ﻦﻜﻤﻳ
pour depressants may be used to improve the characteristics of
lubricants intended for this service. Frictional modi ers and ﻦﻟو .ﺔﻣﺪﺨﻟا هﺬﻬﻟ ﺎﻬﻣاﺪﺨﺘﺳا داﺮﻤﻟا ﻢﻴﺤﺸﺘﻟا تﻮﻳز ءادأ ﻦﻴﺴﺤﺘﻟ ﻚﻟذو بﺎﻜﺴﻧﻻا
extreme pressure additives shall not be utilized. .ﻲﻟﺎﻌﻟا ﻂﻐﻀﻟﺎﺑ ﺔﺻﺎﺨﻟا تﺎﻓﺎﺿﻻاو كﺎﻜﺘﺣﻻا تﺎﻨﺤﺴﻣ ماﺪﺨﺘﺳا ﻢﺘﻳ
Due to speeds and loads involved, untreated oil is generally not a ﻊﻨﻘﻤﻟا ﺖﻳﺰﻟا نﻮﻜﻳ ﻦﻟ ﺞﻟﺎﻌﻣ ﺮﻴﻐﻟا ﻢﻴﺤﺸﺘﻟا ﺖﻳز نﺈﻓ لﺎﻤﺣاو تﺎﻋﺮﺴﻠﻟ ﺔﺠﻴﺘﻧو
satisfactory lubricant for many passenger car manual transmissions.
For some truck and tractor manual transmissions, untreated oils ﻞﻗﺎﻨﻟ ﺔﺒﺴﻨﻟﺎﺑ ﺎﻣأو يوﺪﻴﻟا ﺔﻛﺮﺤﻟا ﻞﻗﺎﻧ مﺪﺨﺘﺴﺗ ﻲﺘﻟا بﺎﻛﺮﻟا تارﺎﻴﺳ ﻦﻣ ﺪﻳﺪﻌﻠﻟ
may be used successfully. In all cases, the transmission ﺔﺠﻟﺎﻌﻣ ﺮﻴﻐﻟا تﻮﻳﺰﻟا ماﺪﺨﺘﺳا ﻦﻜﻤﻳ تاراﺮﺠﻟاو تﺎﻨﺣﺎﺸﻟا ﺾﻌﺒﻟ يوﺪﻴﻟا ﺔﻛﺮﺤﻟا
manufacturers’ speci c lubricants recommendations should be ﺔﺻﺎﺨﻟا ﺔﻛﺮﺤﻟا ﻞﻘﻧ ةﺰﻬﺟأ عﺎﻨﺻ تﺎﻴﺻﻮﺗ عﺎﺒﺗا ﺐﺠﻳ ,تﻻﺎﺤﻟا ﻊﻴﻤﺟ ﻲﻓو .حﺎﺠﻨﺑ
followed. .ةدﺪﺤﻣ ﻢﻴﺤﺸﺗ تﻮﻳز ماﺪﺨﺘﺳﺎﺑ
API GL-2 :API GL-2 ﻲﻜﻳﺮﻣا لوﺮﺘﺒﻟا ﺪﻬﻌﻣ ﺔﻔﺻاﻮﻣ
Designates the type of service characteristic of automotive type ﻲﺘﻟا ﺔﻳدوﺪﻟا تارﺎﻴﺴﻟا روﺎﺤﻣ سوﺮﺗ عاﻮﻧ ﺔﻣﺪﺨﻟا ﺺﺋﺎﺼﺧ عﻮﻧ ﺔﻔﺻاﻮﻤﻟا هﺬﻫ دﺪﺤﺗ
worm-gear axles operating under such conditions of load, تﻮﻳز ﺔﻔﺻاﻮﻣ ﺎﻬﻴﻓ ﻲﻔﺗﻻ ﻲﺘﻟاو قﻻﺰﻧﻻا تﺎﻋﺮﺳو ةراﺮﺤﻟاو ﻞﻴﻤﺤﺘﻟا فوﺮﻇ ﺖﺤﺗ ﻞﻤﻌﺗ
temperature and sliding velocities that lubricants satisfactory for . ﻣﺎﻤﺗ ضﺮﻐﻟﺎﺑ 1-API GL ﻢﻴﺤﺸﺘﻟا
API GL-1 will not su ce.
وأ ﻞﻛﺂﺘﻠﻟ ةدﺎﻀﻤﻟا ﻞﻣاﻮﻌﻟا ﻰﻠﻋ ﻞﻤﺘﺸﺗ ﺔﻣﺪﺨﻟا ﻦﻣ عﻮﻨﻟا اﺬﻬﻟ ﺔﺒﺳﺎﻨﻤﻟا تﺎﺠﺘﻨﻤﻟﺎﻓ
Products suited for this type of service contain anti-wear or very mild .ﺔﻳدوﺪﻟا سوﺮﺘﻠﻟ ﺔﻳﺎﻤﺤﻟا ﺮﻓﻮﺗ ﻲﺘﻟاو ﻲﻟﺎﻌﻟا ﻰﻟإ لﺪﺘﻌﻤﻟا ﻂﻐﻀﻟا ﻞﻣاﻮﻋ
extreme-pressure agents, which provide protection for worm gears.
API GL-3 :API GL-3 ﻲﻜﻳﺮﻣا لوﺮﺘﺒﻟا ﺪﻬﻌﻣ ﺔﻔﺻاﻮﻣ
Designates the type of service characteristic of manual ﺔﻴﻃوﺮﺨﻤﻟا روﺎﺤﻤﻟاو ﺔﻳوﺪﻴﻟا ﺔﻛﺮﺤﻟا ﻞﻘﻧ ةﺰﻬﺟ ﺔﻣﺪﺨﻟا ﺺﺋﺎﺼﺧ ﺔﻴﻋﻮﻧ دﺪﺤﺗ
transmissions and spiral-bevel axles operating under mild to ةﺮﻴﻐﺘﻣ ﺔﻗﺎﺷ ﻰﻟإ ,ﻂﺳو ﻰﻟإ ,ﺔﻟﺪﺘﻌﻣ ﻞﻴﻐﺸﺗ فوﺮﻇ ﺖﺤﺗ ﻞﻤﻌﺗ ﻲﺘﻟا ﺔﻴﻧوﺰﻠﺤﻟا
moderate to severe conditions of speed and load. These service ﺮﺒﻛأ تارﺪﻗ ﻪﻳﺪﻟ ﻢﻴﺤﺸﺗ ﺖﻳز ﺐﻠﻄﺘﺗ هﺬﻫ ﺔﻣﺪﺨﻟا فوﺮﻇ نإ .لﺎﻤﺣاو تﺎﻋﺮﺴﻟا
conditions require a lubricant having load-carrying capacities تﻮﻳز تﺎﺒﻠﻄﺘﻣ نود ﻦﻜﻟو , 1-API GL ﺔﻔﺻاﻮﻤﻟا ﺎﻬﺑ ﺺﺘﺨﺗ ﻲﺘﻟا ﻚﻠﺗ ﻦﻋ لﺎﻤﺣÏﻟ
greater than those that will satisfy API GL-1 service, but below the
requirements of lubricants satisfying API GL-4 service. .1-API GL ﺔﻣﺪﺨﻟا ﺮﻴﻳﺎﻌﻣ ﺮﻓﻮﺗ ﻲﺘﻟا ﻢﻴﺤﺸﺘﻟا
Gear lubricants designated for API GL-3 are not intended for hypoid سوﺮﺘﻟا تﺎﻘﻴﺒﻄﺗ ﻲﻓ مﺪﺨﺘﺴﺗﻻ 3-API GL ﺔﻣﺪﺨﻠﻟ ﺔﺼﺼﺨﻤﻟا ﻢﻴﺤﺸﺘﻟا تﻮﻳز نإ
gear applications. .روﺎﺤﻤﻟا ﺔﻔﻟﺎﺨﺘﻤﻟا
API GL-4 :API GL-4 ﻲﻜﻳﺮﻣا لوﺮﺘﺒﻟا ﺪﻬﻌﻣ ﺔﻔﺻاﻮﻣ
Designates the type of service characteristic of spiral-bevel and روﺎﺤﻤﻟا ﺔﻔﻟﺎﺨﺘﻤﻟاو ﺔﻴﻧوﺰﻠﺤﻟاو ﺔﻴﻃوﺮﺨﻤﻟا سوﺮﺘﻠﻟ ﺔﻣﺪﺨﻟا ﺺﺋﺎﺼﺧ ﺔﻴﻋﻮﻧ دﺪﺤﺗ
hypoid gears in automotive axles operated under moderate speeds تﻮﻳﺰﻟا هﺬﻫو .ﻂﺳو لﺎﻤﺣأو تﺎﻋﺮﺳ فوﺮﻇ ﺖﺤﺗ ﻞﻤﻌﺗ ﻲﺘﻟا تارﺎﻴﺴﻟا روﺎﺤﻣ ﻲﻓ
and loads. These oils may be used in selected manual transmission ﺔﻴﻟدﺎﺒﺘﻟا روﺎﺤﻤﻟاو ﺔﻳوﺪﻴﻟا ﺔﻛﺮﺤﻟا ﻞﻘﻧ ةﺰﻬﺟأ تﺎﻘﻴﺒﻄﺗ ﻲﻓ ﺎﻬﻣاﺪﺨﺘﺳا ﻦﻜﻤﻳ
and transaxle applications. (User should consult axle/transmission ﻞﻘﻧ ةﺰﻬﺟأ/روﺎﺤﻤﻟا عﺎﻨﺻ تﺎﻴﺻﻮﺗ ﻰﻟإ عﻮﺟﺮﻟا مﺪﺨﺘﺴﻤﻟا ﻰﻠﻋ ﺐﺠﻳ) .ةرﺎﺘﺨﻤﻟا
manufacturers’ speci c lubricant recommendations.)
ﺔﻣﺪﺨﻟا هﺬﻫ ﺪﻳﺪﺤﺗ نأ ﻦﻣ ﻢﻏﺮﻟا ﻰﻠﻋو .(ﻦﻴﻌﻤﻟا ﻢﻴﺤﺸﺘﻟا ﺖﻳﺰﺑ ﻖﻠﻌﺘﻳ ﺎﻤﻴﻓ ﺔﻛﺮﺤﻟا
While this service designation is still used commercially to describe رﺎﺒﺘﺧﻻا تاﺪﻌﻣ ﺾﻌﺑ نﺈﻓ ,ﻢﻴﺤﺸﺘﻟا تﻮﻳز ﺔﻴﻋﻮﻧ نﺎﻴﺒﻟ ﺑرﺎﺠﺗ مﺪﺨﺘﺴﻳ لاﺰﻳﻻ
lubricants, some test equipment used for performance veri cation is ﺔﻴﻜﻳﺮﻣا ﺔﻴﻌﻤﺠﻟا ﺚﺤﺒﺗو ًﻼﺻأ ةﺮﻓﻮﺘﻣ ﺪﻌﺗ ﻢﻟ ءادا ﻦﻣ ﻖﻘﺤﺘﻠﻟ ﺔﻣﺪﺨﺘﺴﻤﻟا
no longer available. ASTM is investigating the possibility of rede ning ٤-API GL ﺔﻔﺻاﻮﻤﻟا ﺔﻣﺪﺧ ﺪﻳﺪﺤﺗ ﻒﻳﺮﻌﺗ ةدﺎﻋا ﺔﻴﻧﺎﻜﻣإ ﻲﻓ ﻴﻟﺎﺣ داﻮﻤﻟاو رﺎﺒﺘﺧﻼﻟ
service designation API GL-4 using modern test equipment.
.ﺔﺜﻳﺪﺣ رﺎﺒﺘﺧا تاﺪﻌﻣ ماﺪﺨﺘﺳﻻ
API GL-5 :API GL-5 ﻲﻜﻳﺮﻣا لوﺮﺘﺒﻟا ﺪﻬﻌﻣ ﺔﻔﺻاﻮﻣ
Designates the type of service characteristic of gears, particularly روﺎﺤﻤﺑ روﺎﺤﻤﻟا ﺔﻔﻟﺎﺨﺘﻤﻟا سوﺮﺘﻟا ﺔﺻﺎﺧ سوﺮﺘﻟا ﺔﻣﺪﺧ ﺺﺋﺎﺼﺧ ﺔﻴﻋﻮﻧ دﺪﺤﺗ
hypoids in automotive axles operated under high-speed and/or فوﺮﻇ ﺖﺤﺗو ,ﺔﻀﻔﺨﻨﻤﻟا ﺔﻋﺮﺴﻟا وأ ﺔﻴﻟﺎﻌﻟا ﺔﻋﺮﺴﻟا فوﺮﻇ ﺖﺤﺗ ﻞﻤﻌﺗ ﻲﺘﻟا تارﺎﻴﺴﻟا
low-speed, high-torque conditions. Lubricants quali ed under U.S. 2105D-MIL-L ﻲﻜﻳﺮﻣا ﺶﻴﺠﻟا ﺔﻔﺻاﻮﻤﺑ ﻲﻔﺗ ﻲﺘﻟا ﻢﻴﺤﺸﺘﻟا تﻮﻳز نإ .ﻲﻟﺎﻌﻟا مﺰﻌﻟا
Military Speci cation MIL-L-2105D (formerly MIL-L-2105C) satisfy .5-API GL ﻲﻜﻳﺮﻣا لوﺮﺘﺒﻟا ﺪﻬﻌﻣ ﺔﻔﺻاﻮﻣ تﺎﺒﻠﻄﺘﻤﺑ ﻲﻔﺗ (2105C-MIL-L ﻘﺑﺎﺳ)
the requirements of the API GL-5 designation. Details of API GL-5
performance tests are contained is ASTM Publication STP-512A, ةﺮﺸﻨﺑ 5-API GL ﻲﻜﻳﺮﻣا لوﺮﺘﺒﻟا ﺪﻬﻌﻣ ﺔﻔﺻاﻮﻣ ءادأ تارﺎﺒﺘﺧا ﻞﻴﺻﺎﻔﺗ ﺮﻓﻮﺘﺗ
Laboratory Performance Tests for Automotive Gear Lubricants ءادا تارﺎـﺒـﺘـﺧا :ناﻮﻨﻌﺑ A 512-STP ﻢﻗر داﻮﻤﻟاو تارﺎﺒﺘﺧﻼﻟ ﺔﻴﻜﻳﺮﻣا ﺔﻴﻌﻤﺠﻟا
Intended for API GL-5 Service. .5-API GL ﺔــﻣﺪﺨﻟا ﺔﻔـﺻاﻮﻣ ﺖﺤﺗ تﺎﻛﺮﺤﻤﻟا سوﺮﺘﻟ ﻢﻴﺤــﺸﺘﻟا تﻮــﻳﺰﻟ ﺔﻳﺮﺒﺘﺨﻤﻟا
API GL-6 :API GL-6 ﻲﻜﻳﺮﻣا لوﺮﺘﺒﻟا ﺪﻬﻌﻣ ﺔﻔﺻاﻮﻣ
Designates the type of service characteristic of gears designed with ﺔﺟرد يذ ﻲﺒﻧﺎﺠﻣ ﺮﻴﻐﺻ سﺮﺘﺑ ﺔﻤﻤﺼﻤﻟا سوﺮﺘﻟا ﺺﺋﺎﺼﺧ ﺔﻔﺻاﻮﻤﻟا هﺬﻫ دﺪﺤﺗ
a very high pinion o set. Such designs typically require (gear) score ةﺮﻓﻮﺘﻤﻟا ﺔﻳﺎﻤﺤﻟا ﻰﻠﻋ قﻮﻔﺘﺗ سوﺮﺘﻠﻟ ةﺪﺋاز ﺔﻳﺎﻤﺣ ﻢﻴﻤﺼﺘﻟا اﺬﻫ ﻞﺜﻣ ﺐﻠﻄﺘﻳو .ةﺮﻴﺒﻛ
protection in excess of that provided by API GL-5 gear oils. A shift to سوﺮﺗ ﻰﻟإ لﻮﺤﺘﻟا نإ .5-API GL لوﺮﺘﺒﻟا ﺪﻬﻌﻣ ﺔﻔﺻاﻮﻣ ﺐﺟﻮﻤﺑ سوﺮﺘﻟا تﻮﻳز ﻦﻣ
more modest pinion o sets, coupled with the obsolescence of ﺔﻴﻠﺻا 6-API GL ﺔﻔﺻاﻮﻤﻟا رﺎﺒﺘﺧا تاﺪﻌﻣ ﺔﻴﺣﻼﺻ مﺪﻌﺑ ﺔﻄﺒﺗﺮﻣ ﺔﻴﺒﻧﺎﺠﻣ ةﺮﻴﻐﺻ
original API GL-6 test equipment and procedure, has greatly
diminished the commercial need for API GL-6 gear lubricants. ﻢﻴﺤﺸﺘﻟا تﻮﻳﺰﻟ ﺮﻴﺒﻛ ﻞﻜﺸﺑ ﺔﻳرﺎﺠﺘﻟا ﺔﺟﺎﺤﻟا مﺪﻋ ﻰﻟإ ىدأ ﺪﻗ ,ﻚﻟﺬﺑ صﺎﺨﻟا ءاﺮﺟﻻاو
. 6-API GL ﺔﻔﺻاﻮﻤﻟا تاذ
8 -14