"Four oils, countless applications - choose wrong and pay the price. Conventional, high mileage, synthetic, heavy duty - each serves specific needs. Conventional for standard cars. High mileage for older engines. Synthetic for modern performance. Heavy duty for brutal commercial applications. 🔧 Wrong choice = compromised protection. Conventional in turbo engines? Problems. Synthetic where heavy duty is needed? Inadequate protection. Carquest stocks all four because real mechanics need real choices for real applications. What's your most expensive oil mismatch story? Drop it below and tag someone who needs this application guide! 🛢️ #CarquestAutoParts #MotoroilEducation #ConventionalOil #HighMileageOil #SyntheticOil #HeavyDutyOil #AutomotiveParts #MechanicLife #AutoRepair #EngineProtection #ProfessionalMechanic #CarCare #AutomotiveExpert #GearheadLife #AutoShop"