General Purpose Machine Oils

Mobil Vactra Oil Named and Double Lettered Series oils are formulated from selected chemically stable base oils. Mild antiwear and improved film-strength additives enable these oils to adhere strongly to metal surfaces and provide protection against welding and scoring under thin-film conditions. An effective inhibitor prevents rust and corrosion. All seven grades contain a pour point depressant which lowers the minimum temperature at which they may be used.


Features and Benefits

  • Excellent wear protection under boundary lubrication conditions
  • Good rust and corrosion protection
  • Multipurpose, multiservice capability
  • Economical operation
  • Wide acceptance by machinery builders
  • Non-zinc additive technology


Mobil Vactra Oil Named and Double Lettered Series are formulated for enclosed gears and bearings in industrial applications where a general-purpose oil is recommended. They provide excellent lubrication of plain and antifriction bearings. They are particularly suited for general machine tool lubrication or other industrial applications where the lubricant is applied intermittently.Mobil Vactra Oil Named and Double Lettered Series oils also are recommended for moderate-duty circulation and hydraulic systems where high leakage rates necessitate frequent make-up or where contamination requires frequent change-outs. In such service, these oils offer an economic advantage over premium-quality turbine and circulating oils.Mobil Vactra Oil Named and Double Lettered Series products should not be used where bulk oil temperatures exceed 66 ºC (150 ºF) or where the oil is expected to remain in service for indefinite periods.

Typical Properties

Mobil Vactra OilTest MethodUnitExtraHeavyBBHH
CMCS Code  970223970752970630
AppearanceVisualnoneClear and BrightClear and BrightClear and Bright
Viscosity @ 40 ºCASTM D445cSt150220460
Viscosity @ 100 ºCASTM D445cSt14.620.0329.37
Density @ 15 ºCASTM D 4052kg/L0.89160.89630.9019
Total Acid NumberASTM D 974mgKOH/g0.060.060.06
Rust Characteristics Proc AASTM D 665nonePassPass Pass
Rust Characteristics Proc BASTM D 665nonePassPassPass
Copper Strip Corrosion, 3h @ 100ºCASTM D 130none1A1A1A
EmulsionASTM D 1401min/ml/º C35/3/8250/3/8260/3/82
Foam Seq. I (Tend. /Stab.)ASTM D892ml/ml0/00/020/0
Flash PointASTM D92ºC230250270
Pour PointASTM D97ºC-9-6-6

Health and Safety

Based on available information, this product is not expected to produce adverse effects on health when used for the intended application and the recommendations provided in the Material Safety Data Sheet (MSDS) are followed. MSDS's are available upon request through your sales contract office, or via the Internet. This product should not be used for purposes other than its intended use. If disposing of used product, take care to protect the environment.