You are here:
  1. Home
  2. Automotive
  3. Diesel Engine Oil
  4. Premium Series
  5. SOLAR Premium Series Diesel Engine Oils 15W40 API CI-4

SOLAR Premium Series Diesel Engine Oils 15W40 API CI-4

Description

SOLAR PREMIUM 15W40 is an advanced fully synthetic diesel engine oil designed to provide superior protection, extended drain intervals, and enhanced fuel economy for high-performance diesel engines. Meeting the latest API CK-4 specification, it ensures exceptional engine cleanliness, wear protection, and emissions system compatibility in modern and older diesel engines.

Formulated with premium synthetic base oils and state-of-the-art additive technology, SOLAR PREMIUM 15W40 delivers outstanding oxidation stability, shear resistance, and deposit control, ensuring long-lasting engine performance in extreme operating conditions. It is suitable for heavy-duty commercial vehicles, construction equipment, agricultural machinery, and industrial applications requiring API CK-4.

 

Available API
CK-4
CJ-4
CJ-4/SN
CI-4
CI-4/SL
CI-4 PLUS
Applications

  • Suitable for heavy-duty diesel engines in trucks, buses, construction equipment, and industrial machinery.

  • Ideal for modern diesel engines with advanced emission control systems (DPF, EGR, SCR).

  • Recommended for long-haul trucks, fleet operations, and off-road heavy equipment.

  • Compatible with turbocharged and naturally aspirated diesel engines operating under severe conditions.

  • Suitable for agriculture, mining, and marine diesel engines requiring high-performance lubrication.

Features & Benefits
  • Outstanding Wear Protection – Reduces metal-to-metal contact for extended engine life.
  • Superior Oxidation & Thermal Stability – Prevents oil degradation and deposit formation.
  • Extended Drain Intervals – Allows longer service intervals, reducing maintenance costs.
  • Advanced Soot & Sludge Control – Keeps engines clean for optimal performance.
  • Excellent Fuel Economy – Reduces internal friction for improved efficiency.
  • Cold Weather Performance – Ensures smooth start-up and protection in low temperatures.
  • High Shear Stability – Maintains viscosity under extreme loads and temperatures.
  • Emissions System Protection – Compatible with diesel particulate filters (DPF) and other exhaust after-treatment systems.
Recommended for Vehicles & Assemblies Requiring

  • API CK-4, CJ-4, CI-4+, CI-4, CH-4 or equivalent.

  • ACEA E9, E7, E6 standards.

  • ILSAC GF-5 equivalent for fuel economy and performance benefits.

  • OEM approvals and recommendations for Cummins, Volvo, Mack, Detroit Diesel, Caterpillar, MAN, Mercedes-Benz, Renault Trucks, and other leading manufacturers.

Key Properties

Physical Properties

Properties

15W40

API / ACEA Classification

API CK-4, ACEA E9/E7/E6

Appearance

Bright & Clear

Specific Gravity @15°C

0.868

Flash Point °C

232

Pour Point °C

-39

Viscosity @40 °C, cSt

114.5

Viscosity @100 °C, cSt

15.1

Viscosity Index

150

Total Base No, mg KOH/g

10.2

Cold Cranking Viscosity (cP)

6400 @ -25°C

HTHS Viscosity @ 150°C (mPa.s)

4.1

30 days money back guarantee

Over 100 000 satisfied customers

100% secure online payments

You may also like