These common motor oil myths have persisted for years, confusing drivers and wasting perfectly good oil. We're here to set ...

However, if your car normally requires the use of 5W-20, it's dangerously low on oil, the only motor oil you have available is 5W-30, and you must drive it, it's better to add the 5W-30 than it is ...

This is the oil's viscosity, expressed as a number like 5W-20. The 5 in this example is the cold viscosity and 20 is the hot viscosity at the engine's full running temp.

On the other hand, using 10W-30 in a car built for 5W-30 could prevent the oil from moving smoothly through the engine, making it more difficult to start in cold weather.

The resulting stew of chemicals yields a 5W-30 motor oil, common within the industry. When it’s brand new, a 5W-30 conventional motor oil acts exactly like a 5W-30 synthetic motor oil.

Can I Use GF-7 Engine Oil In My Older Car? Yes, GF-7A engine oils are designed to be backward-compatible with previous ILSAC specifications in popular viscosity grades like 0W-20, 5W-20, 0W-30, 5W ...

Both 5W-30 engine oils have been introduced with the latest American Petroleum Institute (API) engine oil standard for passenger car motor oils with an aim to meet the demanding needs of ...

According to page number 371 of the owner's manual, the dual-throttle-body V8 requires Motorcraft SAE 5W-30 engine oil to the tune of 10 quarts. In metric, that would be 9.5 liters.