Ester-fortified, full synthetic 4T engine oil maintains oil viscosity and film thickness, and next-generation additives protect against wear and deposits Balanced additive system minimizes engine deposits while protecting critical engine, transmission and clutch components Designed to prolong wet clutch life and offers excellent feel Formulated for integrated wet clutches Made in the U.S.A.. OIL 4T PRO PLUS+ 10W50 1L