Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil, 1 Gallon (3 Pack)

Customers find this diesel engine oil performs well, particularly in 6.4L Powerstroke trucks and WRX models, with one customer noting its effectiveness in air-cooled motorcycle engines. Moreover, the oil receives positive feedback for its synthetic quality, smooth operation in motorcycles, and long-lasting performance, lasting up to 7500 miles between changes. However, several customers report issues with leakage, mentioning gallons spilling from the cap.