I like 15w-40 Rotella or Dello or Motorcraft oil check owners manual for more oil weights for weather conditions.
The recommended oil for a 1986 Ford F250 diesel is 10 W 30. However, both 0W-30 and 5W-30 can be used.
Petrol or diesel? What year? All today's Ford engines, both petrol and diesel, use 5w/30 'fuel saving' oil.
5w-30 or 5w-40 is what is recommended by VW for use in your Beetle. If it's the 1.9L Diesel, use 5w-40 Diesel oil. Regular oil doesn't have the added detergents etc that this diesel brand does.
All today's Ford engines, both petrol and diesel, use 5w/30. This type of oil is readily available on supermarket shelves and the containers marked "Suitable for Ford petrol and diesel engines".
5W-20 , according to the 2003 Ford Mustang Owner Guide
I was looking at motorcraft.com and found listings for the 7.3 L diesel from 1988 to 2003
Diesel fuel is often referred to as "diesel oil" or "heavy oil". Do not confuse this with "engine oil for a diesel engine" which means "lubricating oil specially formulated for use in diesel engines". My first Ford Fiesta diesel's tax disc said - "Fuel - Heavy Oil". They've now realised that this term is anachronistic, and my latest tax disc reads "Fuel - Diesel". To be pedantic - Diesel fuel is an oil - Petrol is a spirit.
Diesels do not use oxygen sensors
Ford uses the Motorcraft blended oil (part synthetic).
NO, do not use diesel oil and a gasoline engine.
No, use only the correct filter.
Depends on which engine it had... gas and diesel engines were available for that vehicle.