* For both engines, the recommended oil type is typically SAE 10W-30. However, you should always check your owner's manual for the *specific* recommendation from Ford. The manual will detail the viscosity grade (like 10W-30) and may also specify the type of oil (conventional, synthetic blend, or full synthetic).
* API rating: Look for an oil that meets the API (American Petroleum Institute) service classification specified in your owner's manual. Older manuals might list something like "SF," while later specifications (though still applicable to a '92 vehicle) would likely be higher, such as "SN" or "SM". Checking the newer API ratings will ensure your oil meets or exceeds the minimum requirements.
In short: While 10W-30 is a good starting point, always consult your owner's manual for the precise oil type and specifications recommended by Ford for your 1992 Crown Victoria.
