Castrol’s range of diesel engine oils are formulated to deliver ... T6 10W-30 is a full synthetic heavy-duty engine oil. A full synthetic 10W-30 provides the benefits of a full synthetic engine ...

One area that has received plenty of attention is with engine oil aimed at higher mileage vehicles that have slightly different wants and needs compared to new engines. Castrol has developed just ...

Castrol GTX is available as a 6 pack ... Formula Shell's conventional motor oil is available in 5W-20, 10W-30, 10W-40, and 20W-50 options, in either a 5-quart jug or a dozen 1-quart bottles.

Given all the options for motor oil options out there ... for your car will list its recommended oil weight, whether that's a standard format like 10W-30 or something more unusual.

Late in 1997, Castrol changed the formula of its Syntec "full synthetic motor oil," eliminating the polyalphaolefin ... One is for viscosity, such as 10W-30; and another is for the API service ...