Mobil Turbo 319A-2

Synthetic Aircraft-Type Gas Turbine Lubricant

Description

Mobil Turbo 319A-2 is a fully synthetic lubricant developed to meet the performance requirements of Russian gas turbine aircraft engines which operate on mineral-oil-based lubricants. Formulated from a synthetic hydrocarbon combination of polyalphaolefin (PAO) and hindered ester based stock, Mobil Turbo 319A-2 is fortified with a unique chemical additive system. The resulting product has far superior thermal and oxidation stability than mineral-oil-based lubricants. The ability of Mobil Turbo 319A-2 to resist deterioration and deposit formation allows the potential for extended oil drain intervals and less frequent maintenance.

The closely controlled viscosity of Mobil Turbo 319A-2 at -51o C, along with a -60oC pour point, ensure good low-temperature fluidity, permitting engine starting and lubrication at low temperatures. Mobil Turbo 319A-2 exhibits excellent bulk oil stability at temperatures up to 200o C (392o F). The evaporation rate of Mobil Turbo 319A-2 at high temperatures is significantly lower than mineral-oil-based products, and helps minimize oil consumption. The lubricant has excellent resistance to foaming.

Mobil Turbo 319A-2 is compatible with existing seal materials, including F Rubber (Viton A), H Rubber (Buna N), and silicone, as well as 11 metals used in gas turbine construction.

Features and Benefits

Mobil Turbo 319A-2 offers the following advantages and benefits:

Low evaporation loss and oil consumption
Reduced sludge and carbon deposits
Improved bulk oil oxidation stability and extended oil drain intervals
Compatible with existing seal materials
Reduced engine maintenance, including potential for extended drain intervals

Applications

Mobil Turbo 319A-2 is recommended for aircraft gas turbine engines that normally operate on mineral-oil-based lubricants, as well as engines approved to operate on oils meeting the specifications listed below.

Mobil Turbo 319A-2 is approved against the following specification of the Russian Central Institute of Aeronatutical Motors (CIAM):

IMP-10
MS, 8P, MS-8RK
36/1 Ku-A
VNII NP 50-1-4f and -4u
B3V and LZ-240
Mobil Turbo 319A-2 also meets U.S. Military Specification MIL-L-6081C, as well as the essential performance requirements of U.S. MIL-L-7808K, Grade 3.

Typical Characteristics

Mobil Turbo 319A-2
Physical properties are listed in the table below. Values shown are typical and may vary slightly.
Viscosity
cSt at 40o C	16.2
cSt at 100o C	3.70
cSt at -40o C	2917
cSt at -51o C	12545
Flash point, o C (oF)	234 (453.2)
Pour point, o C (oF)	-60 (-76)
Specific Gravity	0.852
TAN	0.03
Evaporation Loss, %	0.999
5 hr at 175 oC (347oF)	2.4
Foam, ml
Sequence 1, 24oC (75oF)	30
Foam Stability, after 1 min settling, ml	0
Rubber Swell, %
NBR-H, 168 hr at 70oC (158oF)	11.9
FKM, 72 hr at 175oC (347oF)	3.0

Health and Safety

Based on available toxicological information, this product is not expected to produce adverse effects on health when used and handled properly. Information on use and handling, as well as health and safety information, can be found in the Material Safety Data Sheet (MSDS) which can be obtained from your local distributor or via the Internet on http://www.exxonmobil.com/lubes.

The ExxonMobil logotype, Mobil and Mobil Turbo 319A are trademarks of Exxon Mobil Corporation, or one of its subsidiaries. PDSAV-11