2008 Volvo S40 Owner's Manual - Page 227

253 11 Specifications Engine oil Oil specifications Engine oil must meet the minimum ILSAC specification GF-3, API SL, or ACEA A1/B1. Lower quality oils may not offer the same fuel economy, engine performance, or engine protection. Volume: 6.1 US qts (5.8 liters). Volume between the MIN and Max marks on the dipstick: approximately 1.4 US qts (1.3 liters). Volvo recommends Castrol. Depending on your driving habits, premium or synthetic oils may provide superior fuel economy and engine protection. Consult your Volvo retailer or a trained and qualified Volvo service technician for recommendations on premium or synthetic oils. Oil additives must not be used. NOTE Synthetic oil is not used when the oil is changed at the normal service intervals. This oil is only used at customer request, at additional charge. Please consult a trained and qualified Volvo service technician. Oil viscosity (stable ambient temperatures) Operation in hot climates When temperatures exceed 104° F (40° C) in your area, Volvo recommends, for the protection of your engine, that you use a heavier weight oil, such as such as SAE 5W-40 or 0W-40. See the viscosity chart. Operation in temperate climates Incorrect viscosity oil can shorten engine life. Under normal use when temperatures do not exceed 104° F (40° C), SAE 5W-30 will provide good fuel economy and engine protection. See the viscosity chart. Extreme engine operation Synthetic oils meeting SAE 0W-30 or 0W-40 and complying with oil quality requirements are recommended for driving in areas of sustained temperature extremes (hot or cold), when towing a trailer over long distances, and for prolonged driving in mountainous areas. 254 11 Specifications