4-WAY PROTECTION (Jun, 1949)
OPALINE protects your motor 4 ways
1. CLEANS — Keeps your motor clean as a whistle — combats carbon, sludge, lacquer, corrosive acids.
2. SEALS — Improves piston seal to save gasoline, save oil and improve power.
3. COOLS — Draws searing heat away from engine parts.
4. LUBRICATES — Tough protective film reduces wear and saves repair expense.
PREMIUM SINCLAIR OPALINE MOTOR OIL
SUPER-REFINED BY THE PHETONE PROCESS