Fully synthetic and synthetic blend oils last longer than conventional oils, and they have additives that can help keep your ...

Many vehicles produced today require full synthetic motor oil to be added ... That company makes a number of house brands of motor oil, including blends for Amazon and Walmart.

because Shell Rotella® heavy duty diesel engine oil failed to provide proper lubrication. Synthetic blend oils, such as Shell Rotella T5, offer a middle ground between conventional and full synthetic ...

Some automotive enthusiasts will argue that conventional oil ... blends. It is more expensive than other products on our list, but it’s one of the most popular and highly rated synthetic oils ...

If it says “synthetic blend,” it will contain some conventional oil, although the manufacturer isn’t required to tell you exactly how much. “Full” synthetic might have some petroleum ...