Maintenance intervals
• Oil and oil filter change intervals must be halved.
• If conventional diesel fuel has been used in the past, the fuel filter must be replaced after fuelling with
biodiesel a few times. Since biodiesel acts as a solvent, any diesel residue may block the fuel filter.
Special features of biodiesel
• Biodiesel is obtained from vegetable oil (mainly rapeseed oil) by means of a chemical process, where
the vegetable oil is mixed with methanol and converted to biodiesel using a catalyst.
• Biodiesel is virtually sulfur-free and therefore produces almost no sulfur dioxide during combustion.
Biodiesel is more easily biodegradable and has less of an effect on the ground and groundwater in the
event of accidental spills.
IMPORTANT:
In spite of the high environmental compatibility of biodiesel, accidental spills must always be reported.
NOTE:
Also see Service Bulletin 04/2016
1.5.3 Biodegradable hydraulic oil
Oil quality
Use biodegradable hydraulic oil of type HEES with a rapeseed oil and synthetic base of viscosity ISO VG 32
or ISO VG 46.
NOTE:
Polyglycol-based synthetic oils cannot be used.
Instructions for use
Biodegradable hydraulic oil is suitable for winter temperatures down to approx. -15 °C.
Vegetable-based hydraulic oil may thicken in ambient temperatures below -15 °C or if the machine is not
used for long periods of time. After a cold start, allow a short warm-up time at medium engine speed to
ensure safe operation of the hydraulic steering and linkage. In extremely low temperatures, it may be
necessary to warm up the entire tractor.
Avoid mixing with mineral oils, such as with any oil remaining in the system or by connecting and operating
an external implement. This may affect the positive environmental properties of the fluid, and will make it
more difficult to dispose of; it should then be considered as hazardous waste.
Current legislation and the instructions of the oil manufacturer must be observed when disposing of oil.
A mixture containing more than 20% may result in alterations in viscosity and may lead to problems with
the hydraulic valves.
Maintenance intervals
The oil and oil filter need to be changed every 1000 running hours or every year, whichever occurs first.
When switching to biodegradable hydraulic oil, change the hydraulic oil filter after approx. 50 to 100 running
hours. Since biodegradable hydraulic oil acts as a solvent, any oil residue may block the filter.
Specific features
Biodegradable hydraulic oil is more easily biodegradable and has less of an effect on the ground and
groundwater in the event of accidental spills.
IMPORTANT:
In spite of the high environmental compatibility of biodegradable hydraulic oil, accidental spills must always
be reported.
GUID-C2C2DAED-3315-4D4C-A497-A232C9BDA5E5 [V2]
1. 00-000 Entire vehicle system
1-40
FENDT 900 Vario Gen6
X990005734011
