In the late 1970s, when I first started working on cars and doing engine maintenance, 10W-30 was about the only multi ... if ...

oil — such as 10W-30 full synthetic oil instead of 5W-20 full synthetic — or using oil additives to stop leaks. Thicker oil makes an engine harder to start in cold weather, reduces oil ...

Chores like raking leaves and cleaning the garage are easy to ignore weekend after weekend, but when it comes to maintaining your 4x4 a reluctance to get the job done can have catastrophic effects.

$11.50 (U.S.) 10W-30, 5W-20 or even 0W-40. Picking the right viscosity for your engine makes all the difference in the performance and maintenance of your car. A quick lesson in motor oil states ...

Adding 10W-30 (35%) and 5W-20 (11.9%) will allow GET to penetrate approximately 85% of the 585 million gallons per year US market. G-OIL is the world's lowest petroleum, "eco-friendly," ultimate ...

Such competition, of course, inspires questions of whether O'Reilly's in-house motor oil is any good ... standard oils like SAE 5W-20 and 5W-30, as well as SAE 10W-30 and 10W-40, among others.