Engine Coolant - Substitute Warning
89cadillac04Bulletin No. T-89-82
File in Group 6B
Number 22
Corp. Ref. No. 880201
Date March, 1989
SUBJECT: ENGINE COOLANT SUBSTITUTES
MODELS AFFECTED: 1985-1989 DE VILLES AND FLEETWOODS 1982-1989 RWD DE VILLES AND BROUGHAMS 1986-1989 ELDORADOS AND SEVILLES 1982-1988 CIMARRONS 1987-1989 ALLANTES
With the continuing shortage and increasing prices of ethylene glycol, several substitutes have appeared on the market.
These substitutes appear with many names and a variety of prices. Recognizing that price is a major consideration when purchasing required materials, we caution dealers to assure that a bargain is indeed a bargain.
Many substitutes will require increased concentrations for freeze protection and may inhibit coolining capability.
Only ethylene glycol based coolants for aluminum engines meeting the GM 1825M specification are approved for use in Cadillac vehicles. Coolants which use substitutes for ethylene glycol do not meet warranty requirements.