ASTM Method D4815 Valve Timing Mixture 5 components_x000D_ Methylcyclopentane [CAS:96-37-7] 10% ; Isopropyl ether (Diisopropylether) [CAS:108-20-3] 10% ; Ethyl-tert-butylether (ETBE) [CAS:637-92-3] 10% ; Methyl-tert.butylether [CAS:1634-04-4] 10% ; n-Hexane [CAS:110-54-3] 60%