Rolls-Royce 20/25/30 hp

Oil for Rolls-Royce, 20/25/30 hp

Rolls-Royce Model (20/25/30 hp) to find out what kind of oil is used for it

Type Production
20/25 HP <- GKC1-22 1929 - 1934
20/25 HP GKC1-22 -> 1934 - 1937
20HP 1922 - 1925
25/30 HP 1936 - 1938

Recognizing the number...