McLaughlin MCL 36C, Repair Manual

Page: 51 / 90

OPERATING MEDIA
4.1 Lube Oil
4.1.1 Quality Grade
4.1.2 Viscosity
Lube oils are differentiated by Deutz according to
their performance and quality class. Oils of other,
comparable specifications can be used.
Generally, multi-grade oils shall be used. In closed
heated rooms at temperatures >5 deg.C, also
single-grade oils can be used.
As the viscosity of lube oil is dependent on tempera-
ture, the choice of SAE grade should be governed by
the ambient temperature prevailing at the engine
operating site.
Optimum operating behaviour will be attained if you
take the accompanying oil viscosity diagram as a
guide.
Should the temperature fall temporarily below the
limits of the SAE grade selected, cold starting may
be affected but the engine will not be damaged.
In order to keep wear to a minimum, do not exceed
application limits for extended perious of time.
Synthetic lube oils feature an improved temperature
and oxidation stability.
5.1.15
The precise assignment of the admissable oil
qualities to the engines is indicated in chapter 6.1.1.
If in doubt, contact you service representa