1978 Oldsmobile Delta 88 Diesel: In Defense of the Olds 350 Diesel V8

My Grand Dad always had a beater, for everyday driving, and a good car, which he bought new and brought out only on special occasions. Once, he said he’d buy a new car when he retired and give his current garage queen, a 1966 Chrysler sedan, to my Dad. In 1977, Grand Dad did retire, and Dad held him to his word.  To replace the Chrysler, he headed down to Carter Chevrolet-Olds and placed an order for what is oft regarded today as one of General Motors’ biggest blunders: a 1978 Oldsmobile Delta 88 with the then-new 350 CID LF9 V8 diesel engine.

The Delta 88 4-door sedan was the most popular 1978 Olds to be ordered with the LF9 diesel. Much like the base-model 1966 Chrysler, the 1978 Oldsmobile Delta 88 was advertised as more car for not much more money than “lesser” automobiles. Undoubtedly this appealed to Grand Dad’s innate frugality, as it still allowed him to have an upscale, but not ostentatious, full-size automobile.

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1980 Cadillac Eldorado Biarritz Diesel: A Survivor!

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.

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