Use whatever Mercedes Benz recommends. If you do not have an owners manual contact a MB dealer.
The engine in your truck is a Chevrolet 350 if it a stock engine!
Should be an 305ci. V8, some also were equipped with a 350ci. engine.
Its a 5.7L 350 engine
Blower motor is located on the firewall behind the engine.
top left of the engine compartment
Behind engine, under the inlet manifold.
It should be a 5.0L V8 302ci motor.
the 5.0 is a GM engine..Vin Y was an Oldsmobile engine... they also used a 5.0 Chevy engine but neither were a Cadillac engine
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should be on a tag on the flywheel end of motor
The starter should be located at the rear of the engine next to the flywheel on the passenger side. ~ D
it is a fairly simple swap motor mounts should be the same you can use the same tranny if you like or not mounts are the same