Sustina (3220302) API SN/ILSAC GF-5 Certified 0W-20 Fully Synthetic Motor Oil - Pack of 6 (1 Quart Bottle) Improved fuel efficiency up to 2 percentage improvement over GF-5 oil Superior engine protection maintains cleanness of engines 2 times as longer than full synthetic GF-5 The newest base oil technology in the world; ultra high viscosity index base oil (much higher than PAO) Sulfur free additive components; 10x the protection of ZDDP or ZDTP