Fuels And Lubricants - Fayat BOMAG BT 60 Operating And Maintenance Instructions Manual

Maintenance

6.2 Fuels and lubricants

Engine oil
Fig. 34
Fuel
Fuel stabilizer
44
Quality
The oil is an essential factor for the performance and lifetime of the
engine.
Use engine oil for four-stroke engines which meets or even
exceeds the requirements for API-service class SJ or higher (or
equivalent).
Viscosity
Since lubrication oil changes its viscosity with the temperature, the
ambient temperature at the operating location of the engine is of
utmost importance when choosing the viscosity class (SAE-class)
(see diagram Ä Fig. 34).
SAE10W-30 is recommended for general use under any tempera-
ture. When using single purpose oil you must choose the correct
viscosity for the area of use. You may alternatively use 15W-40
(except under low temperatures).
Temperature related lubrication oil changes can be avoided by
using multi-purpose oils. The following oil change intervals apply
also when using multi-purpose oils.
Change intervals
The longest permissible time the lubrication oil should remain in an
engine is 1/2 year or 100 operating hours.
Quality
The engine has been approved for operation with unleaded gaso-
line with a octane number of 91 or higher (or Pump Octane
Number" 86 or higher).
Use only commercially available brand fuel.
You can use unleaded standard grade petrol with maximum 10
percent by volume of ethanol (E10) or maximum 5 percent by
volume of methanol.
Methanol must also contain co-solvents and corrosion inhibitors.
Using fuels with higher ethanol or methanol contents exceeding the
values specified above may cause starting difficulties and/or per-
formance problems. Damage may also occur to metal, rubber or
plastic parts in the fuel system.
Engine damage and performance problems caused by the use of
fuels with higher ethanol or methanol percentages than the ones
specified above are not covered under warranty.
If the machine is only occasionally used (i.e. if it is out of use for
longer than 4 weeks), mix in the correct amount of fuel stabilizer
(BOMSAG 009 940 20) directly after you have purchased fresh fuel
(follow the instructions of the manufacturer).The fuel stabilizer has
a limited shelf life. The effect diminishes over the course of time
(store for max. 2 years after opening the bottle).
Fuel cannot be regenerated by using fuel satbilizer.
BT 60 / BT 65