What kind of engine oil does a 1993 Ford F-250 7.3 L IDI diesel take?
The 1993 Ford F-250 7.3L IDI diesel engine requires 15W-40 diesel engine oil. However, it's crucial to check your owner's manual for the specific recommendations from Ford. While 15W-40 is common and generally suitable, Ford may have specified a particular brand or type with specific additives depending on your operating conditions (climate, etc.). Always prioritize the manufacturer's recommendations.