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Nissan/Datsun 200SX/510/610/710/810/Maxima 1973-1984 Repair Guide

Oil and Fuel Recommendations

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OIL





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Fig. Fig. 1 Oil viscosity chart-all models



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Fig. Fig. 2 Look for the API oil identification label when choosing your engine oil

The SAE (Society of Automotive Engineers) grade number indicates the viscosity of the engine oil and thus its ability to lubricate at a given temperature. The lower the SAE grade number, the lighter the oil. The lower the viscosity, and the easier it is to crank the engine in cold weather.

Oil viscosities should be chosen from those oils recommended for the lowest anticipated temperatures during the oil change interval.

Multi-viscosity oils (10W-30, 20W-50, etc.) offer the important advantage of being adaptable to temperature extremes. They allow easy starting at low temperatures, yet they give good protection at high speeds and engine temperatures. This is a decided advantage in changeable climates or in long distance touring.

Choose the viscosity range carefully, based upon the lowest expected temperature for the time of year. If the lowest expected temperature is 0°F (-18°C), you should use 10W-30. If it is 50°F (10°C), as in spring and fall, you can use 20W-40 and 20W-50 for their extra guarantee of sufficient viscosity at high temperatures.

The API (American Petroleum Institute) designation indicates the classification of engine oil used under certain given operating conditions. Only oils designated for use Service SE should be used. Oils of the SE type perform a variety of functions inside the engine in addition to the basic function as a lubricant. Through a balanced system of metallic detergents and polymeric dispersants, the oil prevents the formation of high and low temperature deposits and also keeps sludge and particles of dirt in suspension. Acids, particularly sulfuric