This document provides recommended physical and chemical properties for a new ISO VG #32 lubricating oil, including: 1. It should have a flash point over 180°C, kinematic viscosity between 28.8-35.2 mm2/s at 40°C and 17.5-22.5 mm2/s at 100°C, and viscosity index over 95. 2. It must contain multiple additives like anti-oxidants, rust inhibitors, and antifoamers. Total acid number should be less than 0.2 mgKOH/g initially and less than 1.0 mgKOH/g after 1000 hours. 3. Other properties listed include a pour

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Table-1 Recommended Physical and Chemical Properties for New Oil [ISO – VG #32]
NO. ITEM UNIT
LUBRICANT NOTE
JIS K2213
CLASS-2 ISO
VG 32
MCO STD
(NEW OIL)
MCO STD
(LIMIT)
1 BASE OIL - - - -
2 ADDITIVES - Required Required - MULTIPLE: Anti-oxidant + Rust inhibitor + Antifoamer
3 FLASH POINT (COC) °C
(°F)
>190
(374)
>180
(356)
- JIS K 2265 (ASTM D92)
4 KINEMATIC 40°C (104°F)
VISCOSITY @50°C (122°F)
100°C (212°F)
mm2
/s 28.8-35.2
-
-
28.8-35.2
17.5-22.5
>4.6
±10% JIS K 2283
5 VISCOSITY 38°C (100°F)
@54°C (130°F)
SSU - - -
6 VISCOSITY INDEX - >95 >95 >90 Oil containing V.I. increaser is not acceptable due to the effect decrease by vibration, etc.
(ASTM D567) (JIS K 2283)
7 POUR POINT °C
(°F)
<-10
(14)
<-17.7
(0)
<-7.5
(18)
Oil containing pour point decreaser is not acceptable due to the effect decrease by vibration, etc. (ASTM D97) (JIS K
2269)
8 DENSITY @15°C (59°F) g/cm3
- <0.8715 - JIS K 2249 (ASTM D1298)
9 WATER CONTENT ppm - <60 <200 Oil purification must be carried out when the value exceeds 200 ppm.
JIS K 2275 (ASTM D4377 or D6304)
10 INTERFACIAL TENSION mN/m - 20-25 >13 (ASTM D971)
11 DEFORMING 24C°(75°F)
CAPABILITY@93.5°C (200°F)
- - 10-0 350-0 JIS K 2518 25-35 ppm of antifoamer is the most preferable. (ASTM D892)
12 TOTALACID VALUE (ACID NUMBER) mgKOH/g <0.3 <0.2 0.4 increase from
initial
JIS K 2501 (ASTM D664)
13 RUST PREVENTIVE
PROPERTIES (WATER)
24 Hr Acceptable Acceptable Acceptable JIS K 2510 Rust inhibitor in new oil to be approx. 2% (ASTM D665)
14 TOTALACID VALUE (ACID NUMBER)
@1000Hr
mgKOH/g <1.0 <0.4 <1.0 JIS K 2514 (ASTM D943)
15 ALKALIMETRY (BASE NUMBER) - - Neutral Neutral JIS K 2252 (ASTM D1093)
16 COPPER PLATE
CORROSION TEST
100°C
X 3 Hr
<1 <1 <1 JIS 1 2 3 4 JIS K 2513
ASTM 1a-1b 2a-2d 3a-3b 4a-4c (ASTM D130)
17 COLOUR ASTM - 1 <4 JIS K 2580 (ASTM D156)
18 SULPHUR CONTENTS mass% - <0.12 <0.15 JIS K 2541 (ASTM D129)
19 ANTIEMULSIFICATION
(DEMULSIBILITY CHARACTERISTIES)
min - 40-40-0 (30) 40-40-0 (40) JIS K 2520 (ASTM D1401)
20 ROTATING PRESSURE
VESSEL OXIDATION TEST
min - >150 >25% of
initial value
JIS K 2514 (ASTM D2272)
21 NONSOLUBLE
SUBSTANCE
% - Trace <0.1 (ASTM D893)
22 VOLUME RESISTIVITY Ω-cm See Note
1 & 2
JIS C 2101
(at oil temp 80°C ±
1°C)
1. ≤ 1.0 x 1014
Ωcm: S.E. stripper is not required.
2. >1.0 x 1014
Ωcm: Desirable to use the S.E. stripper
* Volume resistivity is checked in case of flammable process gas to protect flame problem by
static electricity.
23 OXIDATION STABILITY
120℃ dry-TOST(*)
- < 100mg/kg
sludge
@ 25% of RPVOT
(**)
of new oil
*: Turbine Oil Oxidation Stability Test JIS K 2514 (5) (ASTM D943)
**: Rotating Pressure Vessel Oxidation Test JIS K 2514 (6) (ASTM D2272)
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