Conventional vs Synthetic
Conventional oil is the standard go-to for most cars. More specifically, conventional oil with a viscosity of 5W-20, 5W-30, or 10W-30 will take care of most standard cars.
Some cars require synthetic oil – often when they have more high-tech engines, likely found with performance and heavy-duty cars. Full synthetic oil is made to have better and longer-lasting performance,
plus they generally operate more efficiently at both lower and higher temperatures. However, these are more expensive and can be bad for certain engines, so it’s not recommended to buy synthetic if your car’s manual does not say to use it.
There are also synthetic blend and higher mileage oils for more specialized use. Often, synthetic blend oil may be used in pickups and SUVs to help with carrying heavier loads. If you want to keep your car around even once it’s getting up there in miles, you can use higher-mileage oil. These are formulated with seal conditioners to help restore shape and flexibility to the seals within your car’s engine.