Castrol CRB TURBOMAX 15W-40 CI-4 Plus Diesel Engine Oil for Commercial and Heavy Duty Vehicles

It's the small things that make all the difference. Even particles 1,000 times smaller than a pin head can cause abrasive wear, a key engine deterioration factor. Soot can agglomerate to form large particles which displace oil on moving metal surfaces, causing abrasion on them. Castrol CRB TURBOMAX with DuraShield Boosters actively works in two ways: 1) Fights soot agglomeration, 2) Provides robust protective layer on critical moving engine parts. Castrol CRB TURBOMAX delivers improved wear performance for up to 2X longer engine life*. *Based on time between camshaft rebuilds in a severe Cummins ISB engine test vs. a conventional CH-4 engine oil without DuraShield.