The breakdown-resistant formula of Quaker State Ultimate Durability Q Horsepower 10W30 Synthetic Motor Oil delivers consistent lubrication for enhanced protection from friction-related engine wear. Product Features:Enhanced resistance to engine stress at high rpms and under heavy loadsFormulated to resist thermal and viscosity breakdownConsistent lubricating performance at both high and low temperaturesAPI Service SM; meets the performance specifications of ILSAC GF-4, API SM, ACEA A5-02, Chrysler MS-6395Q, GM 6094M and GM 4718MMade in the USA
