Contains specially engineered DuraShieldTM Boosters that help fight the main causes of engine damage. In severe testing, Castrol CRB Turbomax 15W-40 CI-4/SL/E7 with DuraShieldTM boosters delivers up to twice the engine life
CRB Turbomax 15W-40 CI-4/SL/E7 with DuraShieldTM boosters is proven in industry testing to help provide protection to your engine in two ways
Under severe engine, operating conditions soot can agglomerate to form large particles which help to displace oil on moving metal surfaces. This results in metal to metal contact. CRB Turbomax 15W-40 CI-4/SL/E7 with DuraShieldTM boosters helps to prevent the agglomeration of soot as well as protecting surfaces from wear.
CRB Turbomax 15W-40 CI-4/SL/E7 with DuraShieldTM boosters provides a protective layer on the moving metal surfaces which resists break down, even under difficult conditions.
Based on the time between camshaft rebuilds in a severe Cummins ISB engine test vs. an equivalent oil without DuraShield
