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  4. VISCOSITY GRADES
  5. 15W-40

15W-40

15W-40 is a very common viscosity grade for diesel engine oil. Choose the right oil for your engine.

The right 15W-40 oil for your engine

Castrol MAGNATEC DIESEL is a semi synthetic engine oil that combines dedicated diesel technology with DUALOCK Molecules cling to critical engine parts and lock together, forming a powerful force field of protection that dramatically reduces both warm-up and stop-start wear by 50%*.

 

Non-stop protection from every start.

Castrol MAGNATEC Diesel

Castrol MAGNATEC Diesel

Castrol MAGNATEC DIESEL is a semi synthetic engine oil that combines dedicated diesel technology with DUALOCK Molecules cling to critical engine parts and lock together to form a powerful force field of protection
Castrol GTX Diesel 15W-40

Castrol GTX Diesel 15W-40

Castrol® GTX® Diesel 15W-40 is designed to help your engine run more efficiently and extend engine life.