Operation & Maintenance Manual for WP7 Euro
Ⅵ
Vehicle Diesel Engine
3
Items
Unit
Min limit
Max limit
Urea content
% by weight
31.8
33.2
Density at 20
℃
kg/m³
1,087
1,093
Refracting index at 20
℃
-
1.3814
1.3843
Alkalinity as NH
3
%
-
0.2
Biuret
%
-
0.3
Aldehyde
mg/kg
-
5
Insolubles
mg/kg
-
20
Phosphate (PO
4
)
mg/kg
-
0.5
Calcium
mg/kg
-
0.5
Iron
mg/kg
-
0.5
Copper
mg/kg
-
0.2
Zinc
mg/kg
-
0.2
Chromium
mg/kg
-
0.2
Nickel
mg/kg
-
0.2
Aluminium
mg/kg
-
0.5
Magnesium
mg/kg
-
0.5
Sodium
mg/kg
-
0.5
Potassium
mg/kg
-
0.5
1.5 Features of Weichai Power special oil
1.5.1 High-qualified lubricating oil
Adopt fine imported hydrocracking base oil and composite additives to ensure the
high quality of lubricating oil.
1.5.2 At normal use, the oil-change interval can be increased by 3,500~7,000km
(10,000km for CH-4); excellent oxidation resistance at high temperature and
excellent TBN retention will also prolong the engine life.
1.5.3 Professional protection to extend the engine life
Through a lot of performance and durability tests on Weichai diesel engines,
a professional oil formula suitable for high power and high load engines is
worked out. The special oil can provide the Weichai engine with special
protection and can significantly prolong their service life (by 30~40% in
contrast with others).
1.5.4 Better performance
It features of better wear resistance, TBN retention, anti-rust performance,
antioxidation, better fuel consumption control, shear stability and can reduce
sediments in the turbocharger.
1.5.5 Energy-saving
“Low vis Multi-grade + Friction modifiers”, energy-saving formula,
high oil viscosity index, high oil-film strength and elasticity, thus the engine
