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Below are the AMSOIL oil and filter recommendations for your 1985 Mercedes-Benz 300SD with the 3.0L 5-Cylinder.
1985 MERCEDES-BENZ 300SD 3.0L 5-CYLINDER ENGINE CODE 617.951 H
The 1985 Mercedes-Benz 300SD with the 3.0L five-cylinder diesel is a piece of engineering history that still earns its keep. Mercedes built these engines for taxi duty and cross-country Autobahn work, which means they were overbuilt from the start.
Time is the enemy now. These engines are decades old, and many have lived through owners who stretched oil changes. Old diesel oil leaves carbon in the prechambers and varnish on the bearings, and once that sets in, the engine slowly loses its edge.
A high-quality synthetic with strong detergency can help arrest that process and keep the engine clean going forward. AMSOIL's diesel formula is a solid match for the 300SD's needs, protecting a classic powerplant that is well worth protecting.
The 1985 Mercedes-Benz 300SD 3.0L 5-Cylinder requires 5W-40 full synthetic motor oil. Capacity is 8.5 quarts including filter.
Here is what you need:
You need 8.5 quarts of AMSOIL 5W-40 FS 100% Synthetic European Motor Oil EFMQT-EA which you can learn more about here: AMSOIL 5W-40 European motor oil
Drain Plug Torque Spec: 20 ft/lbs - always replace the drain plug seal when changing oil.
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