Do Motor Oil Additives Work?

Oil bottles on a retail shelf

Oil additives promise several enticing benefits, like improved fuel economy, reduced friction and better wear protection. Find out if you should use them.



Help Prevent Timing Chain Stretch with Good Oil

AMSOIL protects timing chain

Timing chain stretch can affect some modern turbocharged, gasoline-direct-injected (T-GDI) engines, triggering a check-engine light. Here’s what you can do.



What to Look for Before You Buy a Recalled VW Diesel

VW TDI Sportwagen

You can buy a recalled VW diesel at a great price these days. But make sure to check these critical areas first so you don’t waste your money.



Used Car Checklist: What to Know Before You Buy

Used car checklist

Follow this used car checklist to find your next vehicle and ensure it’s in good shape before parting with your hard-earned money.



Can I Mix Synthetic and Conventional Oil?

Signature Series oil change

While it’s safe to mix synthetic and conventional oil since they’re compatible, it’s not a great idea. Here’s why you shouldn’t mix oil types.



AMSOIL Crushes Sequence IIIH Engine Test

Sequence IIIH test

The Sequence IIIH Test is designed to screen oils for their ability to protect modern, hot-running engines. Even after doubling the test, AMSOIL delivered.



What’s the Best Motor Oil for High Heat?

High heat motor oil

Heat can create harmful engine deposits and sludge if your oil isn’t up to the challenge. Here’s why you need to use a premium motor oil to combat heat.



Is Motor Oil Made from Natural Gas Better?

Natural gas motor oil

Natural-gas-based motor oil made using gas-to-liquid (GTL) technology may be interesting, but is it inherently better than other oils? Let’s take a look.



How to Win a Car Show

We asked car show experts what it takes to win a car show. Follow this advice and you may leave your next show with a trophy in hand.



Why is My Engine Overheating?

Car overheating

Low coolant is one of the first things to check if your car is overheating. A bad cooling fan is another potential culprit. Here’s what else to check.