Gas Engine Oil XL 40

Performace Standard: API CF

Meets standard equipment requirement

  • MAN Co-Gen MDE
  • JENBACHER (3/4/6 Series)
  • CAT 3XX/3300/3400/3500/3600 Series


  • Extended oil change intervals.
  • Maximum protection against piston scuffing, scoring and cylinder liner wear.
  • Resistance to oxidation and nitration.
  • Considerable anti-wear and anti-corrosion properties.
  • Reduction in formation of deposits.
  • TBN/Ash content adapted to improve engine cleanliness.
  • Formulations specifically designed to meet equipment constraints.
  • Selected base oils and additives to meet all engine manufacturer requirements even in the most aggressive environment.


Byco Octive-XL 40 allows extended oil drain intervals even in case of poor corrosive gas qualities like gases containing sulphur or hydrogen sulphide or even corrosive organic halides. Depending on the gas quality, the oil drain interval can be extended with continuous oil monitoring.

Protect the environment
Take used oil to an authorized collection point.
Do not discharge into drains, soil or water.

Storage precautions
The closed container can be kept in a dry and covered location at temperatures between 20°C and 40°C for maximum of 3 years.
After longer storage the oil should be homogenized.

Oil Analysis
For optimum results regular oil analysis is strongly recommended.

Key Properties

Properties / Units Units Value Test Method
SAE Grade 40 - - -
Density@15ºC kg/m3 886 ASTM D-4052
Viscosity@40ºC mm2/s 138 ASTM D-445
@100ºC mm2/s 14.7 ASTM D-445
Viscosity Index - 106 ASTM D-2270
Flash Point, COC ºC 250 ASTM D-92
Pour Point ºC -18 ASTM D-97
Sulphated Ash % wt. - 0.43 ASTM D-874
Base Number mg KOH/g - 5 ASTM D-2896

Note: The typical characteristics are given as a guide only and may vary according to latest production according to ISO.