I remember pumping it into trucks for 19 cents a gallon. Now the tax alone is over 40 cents.
If you mean the KTA-600 Cummins (from 1970's)it was 600hp
The maximum speed of the 1970 Fiat diesel 6cyl 228hp truck is 152 mph.
1970 charger.
Between $.16 and $.23 per gallon.
The maximum speed of a 1970 Chevrolet C-70 diesel 6-cylinder 137 hp vehicle is 70 mph.
The maximum speed of a 1970 Mercedes Benz 608 diesel 4-cylinder 90 hp vehicle is 85 mph.
In general unleaded in diesel is worse but it depends on how much unleaded went into how much diesel.
The maximum speed of a 1970 Fiat 619 diesel 6 cylinder 228 hp vehicle is 158 mph or 255 km/h.
You can download the workshop manuals of the trucks Chevrolet c-50 diesel 6cyl 97hp 1969 and Chevrolet c-70 diesel 6cyl 137hp 1970 on repairservicemanuals.com/Chevrolet/
The maximum speed of the truck diesel Mercedes Benz 608 4cyl 90HP 1970 is 180 km per hour.
1970
How much was diesel at the pump in 1991