Please tell me:
* Make and Model of the vehicle: Knowing the make and model of the vehicle will help identify the specific engine type and its oil capacity.
* Engine type: Is it a gasoline or diesel engine? This information is crucial for determining oil capacity.
* Whether it has an oil filter: The oil capacity will vary slightly depending on whether the engine has an oil filter.
Once I have this information, I can provide the correct oil capacity for your 1965 389 CI engine.