Under normal circumstances, most modern engine oil and gasoline brands work fine on their own to keep your engine running smoothly. But there may be cases where even the best of them could use a ...

Snake oil. Mouse milk. Whiffle dust. Take your pick — few products have earned such unflattering sobriquets as aftermarket motor-oil additives. And for the very good reason that these promised ...

Walk into any parts store and you'll see the rows of glossy bottles promising to stop engine wear, boost fuel economy, and make your old clunker run like it just rolled out of the factory. The auto ...

The best synthetic oils offer more mileage, keep the engine cleaner, perform equally well in low and high temperatures, and protect your engine by keeping wear at bay. When it comes to the topic of ...

It doesn't matter if you have a hybrid or conventional gas-powered car, a good motor oil can make the difference between a long-lasting engine and a sputtery ride. Here's what you should look for when ...

In today’s cost-conscious times, supplementary engine and fuel additives promise means of cutting motoring costs. We study whether or not they really deliver Words: Rob Marshall Ever since the ...

Your street machine is an endless source of pride, and by driving it every day, you revel in the fact that it's more than just a "show queen." But after a few miles, you detect a deterioration in its ...

We earn commissions from purchases you make using links in our articles. Learn more. Save time and money by changing your own oil. See the best conventional motor oils here. Shopping for engine oil ...

When you build, rebuild, or buy a new engine, one necessary concept for you to consider is that of breaking the engine in properly for use. This is an important part of your engine's life, and without ...