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 ...

Putting vegetable oil in a car engine is a terrible idea and should never be done, or at least that's what some experts say. What do real-life tests show?

March 14, 2009 – We get a lot of press releases and most of them go directly to the bitslag bucket, but this one seems interesting, so take a look and let us know what you think. UPDATE: New Test: ...

We earn commissions from purchases you make using links in our articles. Learn more. Most drivers know that regular oil changes are necessary to maintain the life and performance of their vehicle. For ...

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 ...

Aftermarket additives are a popular off-the-shelf item at truck stops and parts counters, but many of the necessary additives already are formulated in the diesel engine oils directly from the ...

Q: I have a couple of friends: one swears by oil additives – especially the brand Lucas – and another claims an oil additive ruined his truck engine. What is your take on oil additives? A: Some oil ...

It has been said that oil analysis is 85 percent science and 15 percent art. The science part applies to such things as viscosity, the property in fluid that causes it to resist flow. Laboratory tests ...

Analyzing the oil in your vehicle is like sending your blood to the lab for tests. An engine oil analysis can provide clues about the health of your engine – without any invasive surgery. By analyzing ...

Given all the options for motor oil options out there, choosing the right oil for your car might seem like a daunting task.