What is the oil capacity for a 1989 ford L8000 6 diesel?

The oil capacity for a 1989 Ford L8000 with a 6-cylinder diesel engine (likely a Caterpillar or Detroit Diesel, as Ford didn't manufacture their own diesels in that era) isn't a single, universally stated number. It varies depending on the specific engine model.

To find the precise oil capacity, you need to:

1. Identify the exact engine: Look for an engine data plate on the engine itself. This plate will specify the manufacturer (Caterpillar, Detroit Diesel, etc.) and the exact engine model number.

2. Consult the engine's service manual: Once you know the engine model, find the corresponding service manual. This manual will list the correct oil capacity, including whether that capacity is with or without a filter change. Online resources like manualslib.com may offer service manuals, but checking with a truck repair shop or a Ford parts dealer is also a good option.

Without knowing the specific engine, any oil capacity figure given would be unreliable and potentially damaging to your engine.