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VNII NP 50-1-4F

GOST 13076-86

VNII NP 50-1-4F - is a high-quality synthetic diester oil containing additives, which increase its anti-wear properties and thermo-oxidizing stability.

It doesn't contain silicium (Si<30ppm).

VNII NP 50-1-4F manufactured by JSC Sovchemtech approved and applied for such turbofan engines as:

  • AL-31FN (for China's fighters J-10, J-11B), AL-31 F and its modifications AL-31FP, AL-31FM1 (Su-27, Su-27SK, Su-27SKM, Su-30MK, Su-30MK2, Su-33, Su-35),
  • Ai-222-25 (Yak-130),
  • R-15B-300 (Mig-25, Mig-25RB, Mig-25P),
  • R29-300,
  • RD-33 and its modifications RD-93, RD-33 vol. 3, RD-33B/NB, RD-33MK, SMR-95 (Mig-29, Mig-29OVT, Mig-29K, Mig-35),
  • RD-1700 (Mig AT),
  • D-36, D-436, D-18T, D-27 and those modifications,
  • other turbofan and gasturbine engines.

VNII NP 50-1-4F manufactured by JSC Sovchemtech approved and applied by such leading Russia organizations as:

  • JSC VNII NP (all-Russian Research Institute of Oil Refining),
  • FSUE 25-th State Research Institute of Ministry of Defense of Russian Federation,
  • FSUE State Reseach Institute of Civil Aviation,
  • FSUE Central Institute of Aviation Motorbuilding,
  • FSUE all-Russian Scientific Institute of Aviation Materials.

VNII NP 50-1-4F manufactured by JSC Sovchemtech approved and applied by such leading Russian turbofan jet engines as:

  • FSUE “MMBPE “Salut” - AL-31FN manufacturer,
  • JSC Ufa Engine Industrial Association (UMPO in russian) - AL-31F, AL-55 manufacturer.

Range of use

VNII NP 50-1-4F is used in turbojet aircraft engines with the outlet oil-temperature of up to 175°C (Il-96-300, Tu-204, Yak-42, An-74 and An-124 ‘Ruslan’ civil aircraft; An-72, MiG-21, MiG-23, MiG-27, Su-15, Su-17, Su-20, Su-24, Su-25, Su-27 and Tu-22 military aircraft and Mi-26 helicopters). VNII NP 50-1-4f is also used in the aircraft air-conditioning systems cooling turbines and in the gas-compressor plants gas-turbine engines.

We can guarantee high quality of our products by norms of technical documentation and limits of different elements containing:

Element containing (ppm, not more)
Fe Al Cu Cr Ag Ti Mg Zn Cd Si Pb Sn
1,0 0,5 1,5 0,5 0,4 1,0 8,0 10,0 15,0 30,0 10,0 10,0


Oil parameters in accordance with regulatory documentation (GOST/TU)VNII NP 50-1-4F GOSTVNII NP 50-1-4F average valuesTest method
Kinematic viscosity, mm2/с (cSt):     GOST 33-2000
at 100°С, min. 3,2 3,218  
at minus 40°С, max. 2000 1621  
at minus 54°С, max. 11000 10329  
Pour point, °C, max. -60 below -60 GOST 20287-91
Open flash point, °C, min. 204 229 GOST 4333-87
Acid number, mg KOH per 1 g of oil, max. 0,20 0,021 GOST 5985-79
Water-soluble acid and alcalis content, % Absent Absent GOST 6307-75
Water content Absent Absent GOST 1547-84
Mechanical impurities content,% Absent Absent GOST 6370-83
Density at 20°C, g/cm3, max. 0,9260 0,924 gost 3900-85
Ash content %, max. 0,1 0,022 GOST 1461-75
Tribological characteristics, taken with a four-ball tester at the air temperature of:     GOST 9490-75
critical load (Pk), N (kgf), min. 735 (75) (77)  
wear variable (Diameter Wear), mm, at axial load 196N (20kgf), max. 0,4 0,32  
Thermal-oxidative stability at 175°C within 50 hours and the air consumption of 10±0,5 dm3/hour     GOST 23797-79
а) mass content of residue, insoluble in isooctane, %, max. 0,3 0,022  
b) acid number after oxidation, mg KOH/g of oil, max. 0,4 0,074 GOST 5985-79
c) kinematic viscosity after oxidation at minus 40°C, mm2/s (cSt), max.: 3500 1654  
d) weight corrosion index after oxidation, g/dm2 (mg/cm2 ), on plates made of:      
- wrought aluminum alloy, grade AK4 (GOST 4784-74), max. ±2,0 Absent  
- made of grade M1 or M2 copper (GOST 859-78), max. ±1,5 Absent  
- steel grade SHH-15 (GOST 801-78) Absent Absent  


Sales department of oils: +7 (495) 139-10-42
Laboratory: +7 (495) 139-10-42 доб.56535

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