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OILS VISCOSITY
Viscosity is a characteristic of oil flow or fluidity, dened
by two numbers: cold and hot. Example :
15W-40: cold viscosity index followed by the letter W
signifying winter. A low value indicates good fluidity at
low temperatures.
15W-40: hot viscosity index (100 °C - summer). A high
value indicates a better lubrication at hot temperatures.
Normative instances :
• Society of Automotive Engineers (SAE),
• American Petroleum Institute (API),
• Association des Constructeurs Européens
’Automobiles (ACEA),
• Japanese Automobile Manufacturer Association
(JAMA).
IMPORTANT !
On manufacturers side, oils are subject to constant im-
provements, particularly concerning the additives al-
lowing a better resistance towards oxidation and fuel
economy. Refer to the expertise of the local Nanni rep-
resentative regarding the oil that best suits your engine.
CORRESPONDENCE BETWEEN API AND
ACEA OILS
API ACEA - JAMA
CG-4 ACEA E1
CF-4 ACEA E2 ; ACEA E3
CH-4 ACEA E5 ; JAMA DH 5
CI-4 ACEA E7
CJ-4 ACEA E9 ; JAMA DH 2
DIESEL SULPHUR CONTENT
NOTE
Diesel sulphur content affects engine oil and lter service
intervals.
Use of diesel fuel with sulphur content less than 2000
mg/kg (2000 ppm) is RECOMMENDED.
Use of diesel fuel with sulphur content of 2000-5000 mg/
kg (2000-5000 ppm) REDUCES by 50% the oil and lter
change interval.
Do not use diesel fuel with sulphur content greater than
5000 mg/kg (5000 ppm).
IMPORTANT !
To avoid engine damage:
Reduce oil and lter service intervals by 50% when using
BioDiesel blends greater than B20. Oil analysis may allow
longer service intervals.
Use only approved oil types.
S03 FLUIDS
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