Ford Bronco Manual: Engine Compartment Service Points & Engine Oil Recommendations

This is a page from an automotive service manual (Chilton-style), likely part of a routine maintenance section. The top of the page contains a numbered legend (items 1–12) for Fig. 89, 'Engine compartment service points,' identifying underhood service locations: radiator filler cap, battery, air cleaner, automatic transmission dipstick, brake master cylinder, engine oil filter, distributor, engine oil dipstick, PCV valve, engine oil filler cap, power steering reservoir, and the combined windshield washer reservoir/radiator overflow bottle. The remainder of the page begins a section titled 'Fuel and Engine Oil Recommendations' for gasoline engines (referencing Figure 90). It explains that recommended oil viscosities for sustained temperatures from below 0°F (−18°C) to above 32°F (0°C) are covered, and that multiviscosity oils are recommended for their wider acceptable temperature range. It warns that oil equal in quality to original equipment must be used, as inferior oils may void the warranty or damage the engine. It explains the SAE grade number: lower SAE numbers mean lighter oil and easier cold-weather cranking but less high-temperature protection. It advises choosing oil viscosity based on the lowest anticipated temperature during the oil change interval. The text is cut off mid-sentence, continuing on the next page.