Citgo® Supergard® SAE 10W-40 Motor Oil. SAE 10W-40. Reduces friction and wear. Excellent high temperature protection. Low volatility. Superior viscosity retention. Exceeds requirements for: API service SN, SM. Don't pollute... return used oil to collection centers. API Service SN SAE 10W-40®. Citgo®. www.citgo.com.