So, you mixed synthetic oil and conventional oil. You screwed up, and now you're wondering if what you did will have catastrophic consequences. Whether it was a simple accident or if you did it on ...

Q:My 2008 Mercedes-Benz S63 AMG calls for synthetic engine motor oil, Mobil 1, but on a recent trip I was forced to add one quart of regular motor oil to its 8.5 quart crankcase. Do conventional motor ...

There’s no NASCAR, 1967 Ferrari F312, Porsche 911, or even your daily driver Hyundai Sonata without oil. Whether conventional or synthetic, engine oil is the lifeblood of your vehicle. Back to oil, ...

Synthetic oil may lighten your wallet during an oil change, but a new study by AAA finds significant benefits under the hood. In an independent evaluation, synthetic oil outperformed its conventional ...

Any good car owner knows how important it is to take your car in for regular maintenance and getting engine oil changed every so often. Every vehicle is different, but most car service shops will put ...

Changing fluids in a pickup truck has been necessary since the first one rolled off the assembly line more than 100 years ago. Vehicles — and what goes into them — are constantly changing and ...

Synthetic oil is worth the extra cost for most drivers. It lasts 7,500 to 15,000 miles between changes compared to 3,000 ...

Not everyone is a car enthusiast, meaning many drivers are likely still using the oil option favored by the manufacturer or dealer in their vehicles. Featured Video However, there can be a significant ...