12 Best Oil Additives — Reviews List Of 2018 #12 XL Nanolube Engine Oil Additive & Nano Treatment; Reduces Oil Burning #11 XADO 1 Stage Atomic Metal Conditioner Revitalizant for HEAVY DUTY DIESEL #10 ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 2 Bottles #9 Liqui Moly (20002) Cera Tec Friction Modifier – 300 ml #8 REV-X Stiction Fix Oil Treatment – Two 4 fl. oz. Bottles #7 Archoil AR9100 Oil Additive (16oz) for All Vehicles – Powerstroke Cold Starts #6 Lucas Oil LUC10131 Pure Synthetic Oil Stabilizer – 1 Gallon #5 Marvel MM13R Mystery Oil – 32 oz #4 Lucas LUC10130 Synthetic Oil Stabilizer. Quart #3 TriboTEX Oil Additive Car Engine Treatment: Add to Engine Oil #2 Lucas 10001 Heavy Duty Oil Stabilizer – 32 oz. #1 AI Innovations LUC10002 Lucas Heavy Duty Oil Stabilizer, 1 Gallon