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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
d’Automobiles (ACEA),
• Japanese Automobile Manufacturer Association
(JAMA).
IMPORTANT !
On manufacturers side, oils are subject to constant
improvements, particularly concerning the additives
allowing a better resistance towards oxydation and
fuel economy. Refer to the expertise of the local Nanni
Industries representative 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 sulfur content affects engine oil and lter service
intervals.
Use of diesel fuel with sulfur content less than 2000 mg/
kg (2000 ppm) is RECOMMENDED.
Use of diesel fuel with sulfur content of 2000-5000 mg/
kg (2000-5000 ppm) REDUCES by 50% the oil and lter
change interval.
Do not use diesel fuel with sulfur 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 analy-
sis may allow longer service intervals.
• Use only approved oil types.
S03 FLUIDS
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