Fuels And Lubricants - Fayat BOMAG BT 60/4 Operating And Maintenance Instructions Manual

6.2 Fuels and lubricants

Engine oil
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).
Fig. 31
Viscosity
Since lubrication oil changes its viscosity with the
temperature, the ambient temperature at the oper-
ating location of the engine is of utmost impor-
tance when choosing the viscosity class (SAE-
class) (see diagram (Fig. 31)).
SAE10W-30 is recommended for general use un-
der any temperature. 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 follow-
ing oil change intervals apply also when using mul-
ti-purpose oils.
Change intervals
The longest permissible time the lubrication oil
should remain in an engine is 1/2 year or 100 op-
erating hours.
BT 60/4, BT 65/4
Fuel
Quality
The engine has been approved for operation with
unleaded gasoline 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 corro-
sion inhibitors.
Using fuels with higher ethanol or methanol con-
tents exceeding the values specified above may
cause starting difficulties and/or performance
problems. Damage may also occur to metal, rub-
ber 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.
Fuel stabilizer
If the machine is only occasionally used (i.e. if it is
out of use for longer than 4 weeks), mix in the cor-
rect 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 ef-
fect diminishes over the course of time (store for
max. 2 years after opening the bottle).
Fuel cannot be regenerated by using fuel satbiliz-
er.
Tamper foot oil
For the tamper foot use a fully synthetic gear oil
SAE 75W-90, API GL5.
BOMAG
Maintenance
35