| Triumphs Only, Inc. - Triumph Technical Service Bulletin |
Cooling System - Stag
April, 1971
The Stag engine incorporates aluminum cylinder heads, consequently, it is important that antifreeze is used year round to protect the aluminum from corrosion. Only "Prestone" or an equivalent permanent type antifreeze should be used for topping up or filling the radiator as per the recommendations in the owner's manual.