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MS-8p

OST 38.01163-78

The oils has a petroleum base with a mixture of high-performance additives. It is produced from the West-Siberian and Ural petroleum. It has been developed to replace the oils: MK-8 and MK-8p, but it has significantly superior operating characteristics such as improved viscosity at low temperatures, improved thermal and oxidation stability and lifetime.

APPLICATION

The MS-8p is used in gas-turbine aircraft engines with outlet temperature of oil up to 150°C (civil aircraft II-62, Il-76, Il-86, Tu-134, Tu-154 and Yak-40, military aircraft MiG-21, Su-15 and Su-25, helicopters Mi-6 and Mi-7). It is used in oil compounds in turboprop engines (An-12, An-30, An-32 and Il-18), and for preserving aeroengine lubrication systems. Besides, MS-8p is used in marine (ship), gas-compressor plant and power plant gas-turbine engines.

SPECIFICATIONS

Item

Standard

Kinematic viscosity, mm2/с (cSt):

 

at 50°С, min.

8,0

at - 40°С, max.

4000

Flash point in the closed crucible, °C, min.

145

Pour point, °C, max.

-55

Thermal and oxidation stability at 150°C for 50 hours:

 

a) kinematic viscosity at 50°C after oxidation cSt, max.

10

b) kinematic viscosity at -40°C after oxidation cSt, max.

5500

c) acid number after oxidation, mg KOH/g of oil, max.

0,7

d) mass content of residue after oxidation, %, max.

0,15

e) corrosion on plates after oxidation made of, mg/cm2, max.:

 

- ShH-15 steel (GOST 801-60)

Absent

- M1 or M2 copper (GOST 859-66)

±0,2

- AK-4 alluminum alloy (GOST 4784-74)

Absent

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