Engine oil additives make all sorts of promises about helping your vehicle's motor last longer and increasing your gas mileage. Here's what you need to know.

Pros: Low cost; Cons: Often not as effective as blends or synthetics; Best for: Saving money; Synthetic motor oil Actually, still liquid dinos, but modified. Pros: Potentially better performance ...

Generally speaking, it’s safe to run synthetic oil in an older or high-milage engine. That’s not what you might read online though. And there’s a reason for that.

Austin, Aug. 30, 2024 (GLOBE NEWSWIRE) -- The SNS Insider report indicates that The Lubricating Oil Additives Market size is projected to reach USD 25.66 billion by 2032 and grow at a CAGR of 3.00 ...

Just don’t put them in as you source all the good compounds one at a time and make your base oil from them. That, not some man-made substance, is what “synthetic” means in this context. I think.

Some additives can help in certain situations, but for most modern cars running synthetic oil that are designed to last up to 15,000 miles, they're about as useful as screen doors on a submarine.