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Schaeffer Oil Recommendations for Chevrolet & GMC Trucks by Buy1Oils.comGASOLINEC/K Series-1998                    #7031500HD, 2500HD, 3500HD1999-2010            #701 or #9003D2011-2014            #9003D Colorado/Canyon2004-2010                 #701 or #9003D2011-2012                 #9003D2013 …

Buy1oils Recommendations For PowerStroke DieselCustomer question: "I have a PowerStroke diesel which of your oils and fuel additives would you recommend? Thanks!"Answer:We recommend using the Synshield Durability Advantage CK-4 15W-40,  Synshield OTR Plus CK-4 10W-30, or the Synshield Ultra Performance CK-4 10W-30, all of which meet the new Ford WSS-M2C171-E specification.Please keep in mind Schaeffer oil does such a good job cleaning we recommend not doing an oil analysis du …