Lubechem Consultant, we provide end-to-end formulation solutions for 10W-40 multigrade petrol engine oil, designed to meet the lubrication needs of modern engines. This formulation is ideal for vehicles operating in varied climatic conditions, offering excellent performance from cold starts to high-temperature running. Our formulations meet key API specifications (API SL/SM/SN) and are fully customizable to suit your market and raw material availability.

We use high-quality base oils (SN150/SN500 or Group II blends) along with carefully selected additive packages including ZDDP, viscosity index improvers (VII), dispersants, detergents, and anti-oxidants. This ensures reliable oxidation stability, wear protection, detergent-dispersant balance, and extended oil life.

We Help You With:
Base oil and additive selection and sourcing
10w40 engine oil formulation as per API SL/SM/SN standards
Blending methods, temperature & mixing parameters
Technical guidance and lab testing protocols
Cost optimization and performance tuning
 
Technical Specifications for 10W-40 Engine Oil
Parameter
Typical Range
Test Method
API Performance Level
SL, SM, SN
API Classification
Viscosity @ 40°C (cSt)
85 – 100
ASTM D445
Viscosity @ 100°C (cSt)
13.5 – 15.5
ASTM D445
Viscosity Index (VI)
≥ 140
ASTM D2270
CCS @ -25°C (cP)
≤ 7000
ASTM D5293
Flash Point (°C)
≥ 220
ASTM D92
Pour Point (°C)
≤ -33
ASTM D97
TBN (mg KOH/g)
6 – 9
ASTM D2896
Density @ 15°C (g/cm³)
0.860 – 0.880
ASTM D4052
Sulphated Ash (% wt)
0.8 – 1.2
ASTM D874
Foaming Characteristics
Pass (All Sequences)
ASTM D892
Noack Volatility (%)
≤ 15
ASTM D5800
Copper Strip Corrosion
1A
ASTM D130
Color
L 3.5 max
ASTM D1500

Why Choose Our 10W-40 Formulation?
Ideal for both warm and cold climates
Meets international standards (API SL/SM/SN)
Suitable for high-performance gasoline engines
Reduced wear, sludge, and deposit formation
Economical yet high-performing formulations
Full consultation on formulation, blending & lab setup