Do you remember the GM 5.7-liter Diesel? Even those of a certain age who haven’t directly experienced one undoubtedly have heard of them. My parents’ friends down at the marina had a Dark Jadestone 1982 Delta 88 Diesel coupe, and I can distinctly remember its lud-lud-lud-lud engine beat. The Werthmanns had good luck with that car, and kept it for 10 years. While theirs ran like a top, that wasn’t exactly the most common experience…
Oldsmobile was the pioneer in engineering GM’s Diesel V8. The engine was also available for the Cadillac Seville in 1978, and for the Eldorado, Fleetwood Brougham, Coupe deVille and Sedan deVille in 1979.
Despite many horror stories over the years, the much-maligned 5.7 Diesel, when properly maintained, could be reliable. However, many of the buyers of GM cars fitted with this engine were quite unfamiliar with the additional care and feeding diesel engines required vis a vis the gasoline V8s many of them traded off for one of these. As a result, many of them experienced headaches from their cars. The whole GM Diesel V8 episode turned many Americans off to Diesel engines for years. Though by 1982 they had been reengineered and as a whole were much less needy. But by them it was too late; people were staying away.