Castrol Assuron™

As automatic transmissions become more complex there’s a need for more technologically advanced fluids to ensure vehicle reliability. Getting the right oil for your car is key to ensuring your transmission operates as designed and you get a smooth driving experience every day.
Castrol, with over 100 years of experience in developing transmission fluids, and being the choice of many leading car and transmissions manufacturers for factory-fill products, offers a range of automatic transmission fluids for your car’s requirements. Providing you the peace of mind that you are selecting the right oil for your vehicle. 

Assuron 10W, 30W, 40W 60W

Castrol® Assuron™ are high performance, straight grade, heavy–duty engine oils that couple selected base stocks with a carefully balanced additive package.