Castrol® GTX® Full Synthetic 0W-20 Motor Oil provides maximum protection to help fight the impact of severe conditions that can potentially shorten engine life. It’s formulated to provide superior protection in 7 critical areas, including engine wear and sludge control, by cleaning away old sludge(3) and preventing new sludge formation — better than required by the latest industry standard.
(1) As measured in the Sequence VH sludge test vs. API SP limits.
(2) As measured in the latest Sequence IVA test.
(3) When tested in engines with a high level of sludge.
(4) Based on Kurt Orbahn test in 5W-30 grade.