CRANKSHAFT ASSEM. 8N7105 - Caterpillar

Engine Oil Quality
Illustration 1 g06078997To achieve proper engine performance and durability, use only engine lubricating oils of the correct quality in your engine. Proper quality oils also provide maximum efficiency for crankcase ventilation systems, which reduces pollution.Important: use only engine oils displaying the American Petroleum Institute (API) "Starburst" Certification Mark 'FOR GASOLINE ENGINES' on the container.Caterpillar recommends using engine oils that have an API rating of SM or newer. Gasoline engines that are converted for LPG or NG fuels MUST use oils labeled "FOR GASOLINE ENGINES." Do not use oils that are formulated for Diesel Engines only. CC or CD classifications oils, even when labeled Heavy Duty or for Natural Gas Engines, ARE NOT ACCEPTABLE.Engine Oil Recommendations
Multi-viscosity oils are recommended. SAE 10W-30 is recommended for your engine from 0 degrees F (-18 degrees C) or above. If ambient temperatures are consistently below 0 degrees f, SAE 5W-30 oil can be used. Synthetic oils are not required for industrial or stationary engines.Fuel Quality
Natural Gas engines are designed to operate on pipeline quality natural gas with a heat value of 1050 BTU or higher. LPG engines and fuel systems are designed to operate on HD-5 or HD-10 specification LPG fuel. Fuel other than HD-5 or HD-10 may cause harm to the emission control system and a warranty claim may be denied on this basis if operators can readily find the proper fuel. Use of any other fuel may result in your engine no longer operating in compliance with CARB or EPA emissions requirements.