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1978 Dodge D150 Truck Parked for Decades Packs a Rare Diesel Surprise

1978 Dodge D150 diesel 17 photos
Photo: Todd Mashek/Facebook Marketplace
1978 Dodge D150 diesel1978 Dodge D150 diesel1978 Dodge D150 diesel1978 Dodge D150 diesel1978 Dodge D150 diesel1978 Dodge D150 diesel1978 Dodge D150 diesel1978 Dodge D150 diesel1978 Dodge D150 diesel1978 Dodge D150 diesel1978 Dodge D150 diesel1978 Dodge D150 diesel1978 Dodge D150 diesel1978 Dodge D150 diesel1978 Dodge D150 diesel1978 Dodge D150 diesel
Introduced for the 1961 model year, the D-Series truck is one of Dodge's longest-running nameplates. That's because it remained in production all the way until 1993. These workhorses were quite popular, and they're anything but rare overall, but certain iterations were produced in limited numbers.
The 1964 D100 Street Wedge is the first that comes to mind. The grandfather of the modern high-performance truck, this hot-rodded pickup hit the market with a 365-horsepower V8, and only around 50 units were made. Its spiritual predecessor, the Li'l Red Express, was also sold in small numbers in 1978 and 1979.

I could also include the Warlock on this list. It was produced for four model years (1976-1979), but some drivetrain configurations are rare. The 440-cubic-inch (7.2-liter) V8, for instance, found its way into fewer than 100 examples a year. The 1978 D150 you see here is not a Li'l Red Express or a Warlock, but it's a one-year oddball powered by a diesel engine. And it's rare, too.

I know "rare" isn't the first word you think of when talking about diesel-powered Dodge haulers. But this pickup is not your average Cummins-powered rig, which have been populating dealerships since the late 1989s. This truck left the factory long before that and relies on an inline-six supplied by Mitsubishi.

Called the 6DR5, the 243-cubic-inch (4.0-liter) powerplant was added to the lineup to give Dodge a new economy option in the D/W 150 and 200 models. The mill was initially fitted in various iterations of the Mitsubishi Fuso, including the light-duty Canter truck and the Rosa bus, and provided 105 horsepower and 169 pound-feet (230 Nm) of torque.

Part of the same collaboration that spawned the Dodge Colt and Chrysler Conquest, the diesel truck was the company's most fuel-efficient hauler at the time. Despite this, it was considered underpowered by American standards and quickly phased out due to low sales. The rig found only about 2,800 customers in its single year in dealerships. The red regular cab pickup you see here is one of them.

This D150, reportedly parked in a garage in Utah for most of its life, shows only 74,000 miles (119,091 km) on the odometer. It's unclear if it's an unrestored survivor, but the Mitsubishi oil burner looks clean, and it runs. The truck is also described as rust-free and solid. However, it does have weathering on the hood, tailgate, and inside the bed, while the interior shows wear and tear.

All told it's one of those trucks that's quite rare but not worth much on the classic car market. If you're into oddball haulers from the past, the D150 is for sale in Troy, Missouri, and the owner wants $17,000 to let it go.

Here's a cool fact before you check it out: the Mitsubishi-powered D-Series is actually Dodge's second diesel truck. The first one was introduced in 1962 with a 354-cubic-inch (5.8-liter) Perkins inline-six unit. It was also discontinued after only one year due to low demand.
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About the author: Ciprian Florea
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Ask Ciprian about cars and he'll reveal an obsession with classics and an annoyance with modern design cues. Read his articles and you'll understand why his ideal SUV is the 1969 Chevrolet K5 Blazer.
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