Castrol 03112 GTX High Mileage 20W-50 Synthetic Blend Motor Oil, 5 Quart, 3 Pack For cars with over 75,000 miles Superior dispersancy that fights sludge build-up Exceptional oil burn-off protection exceeding industry standards** ** Based on API and ACEA volatility specifications Seal conditioners to help reduce leaks Advanced additives to minimize engine wear API SN Castrol recommends the use of Bosch oil filters