15W-40 Engine Oils
Discover our high-performance 15W-40 engine oils, engineered for superior protection in heavy-duty diesel and high-mileage engines.
Eiffel Vista Extreme 15W-40 Full Synthetic Diesel Engine Oil CK-4/SN 5L
Eiffel Vista Extreme 15W-40 CK-4/SN Full Synthetic Diesel Oil – 20L
Eiffel Vista Extreme 15W40 CK-4/SN Semi-Synthetic Diesel Engine Oil - 20 L
Eiffel Vista Extreme SAE 15W-40 CK-4/SN Mineral Diesel Engine Oil - 20 L
Eiffel Vista Titanium 15W-40 CI-4/SL Semi-Synthetic Diesel Engine Oil – 20L
Eiffel Noble Ultimate 15W40 Semi-Synthetic Engine Oil SN/CF - 205L Drum
Eiffel Vista Extreme 15W-40 CK-4/SN Mineral Diesel Engine Oil - 205 Litre Drum
Eiffel Vista Extreme 15W40 Semi-Synthetic Diesel Engine Oil CK-4/SN - 205 Litre Drum
Eiffel Vista Extreme SAE 15W-40 CK-4/SN Full Synthetic Diesel Engine Oil - 205 Litre Drum
Eiffel Vista Titanium 15W40 Semi-Synthetic Diesel Engine Oil CI-4/SL - 205 Litre Barrel
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Always wanted to try premium synthetic oils but never knew where to start. The product guides on Eiffel Lubricants were super helpful! They gave me the confidence to choose the right oil for my car. Thanks for making it easy!
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A Guide to 15W-40 Engine Oil
15W-40 engine oil is widely regarded as the workhorse of the lubricant world. It is a robust, versatile oil engineered to provide exceptional protection for engines that work hard, especially heavy-duty diesel engines in trucks, agricultural machinery, and construction equipment. Eiffel Lubricants offers a range of premium 15W-40 oils designed to deliver the durability and performance these demanding applications require.
Understanding the 15W-40 Viscosity Grade
The numbers in "15W-40" are a measure of the oil's viscosity, or its thickness, at different temperatures. Knowing what they mean helps you understand how the oil protects your engine.
- 15W: The 'W' stands for 'Winter'. The number 15 indicates the oil's flow characteristics at cold temperatures. While not as thin as a 0W or 5W oil, a 15W grade provides good flow for reliable start-up protection in most Australian climates.
- 40: This number represents the oil's viscosity at high operating temperatures. A 40-grade oil maintains a thick, durable protective film over critical engine parts when the engine is working hard, helping to prevent wear under heavy loads and high heat.
What is 15W-40 Oil Used For?
15W-40 is the go-to oil for a wide variety of demanding applications. Its robust nature makes it the primary choice for:
- Heavy-Duty Diesel Trucks: From long-haul freight to local delivery, 15W-40 is the standard for protecting large diesel engines.
- Agricultural and Construction Equipment: Tractors, excavators, and other off-road machinery rely on 15W-40 for its ability to handle dirt, heavy loads, and long operating hours.
- Older Passenger Cars: Many older petrol and diesel vehicles, especially those with higher mileage, can benefit from the thicker protective film of a 15W-40 oil.
- Mixed Commercial Fleets: Its suitability for many diesel and older petrol engines makes it a versatile and cost-effective choice for businesses managing different types of vehicles.
The Core Benefits of a High-Quality 15W-40 Oil
Using a premium 15W-40 oil from Eiffel Lubricants helps ensure your hardworking engines are properly protected.
- Superior Wear Protection: It is designed to provide excellent protection for pistons, bearings, and other critical components, especially under the high-pressure conditions found in diesel engines.
- Helps Control Soot and Deposits: Diesel engines produce soot. Our 15W-40 oils contain advanced detergents and dispersants designed to suspend these particles and prevent sludge, keeping the engine clean and efficient.
- Robust High-Temperature Performance: This oil is engineered to resist thermal breakdown, ensuring it maintains its strength and continues to protect the engine even when temperatures soar.
Always consult your vehicle's owner's manual for manufacturer-specific recommendations.