If you have ever wondered what Marvel Mystery Oil is, you're in good company. We've done the research and compiled everything ...

Fuel additives can promise better car performance, but there’s not enough data to verify the claim. Regardless, certain vehicles likely wouldn't benefit. Many, or all, of the products featured ...

That’s where diesel fuel additives come in. "At Howes, we believe industry testing isn’t just a benchmark—it’s a promise. Rigorous testing ensures that our diesel fuel additives ...

If your diesel car, truck, or even farm equipment isn’t running right anymore or is sitting parked for a long time or in long temperatures, then diesel fuel additives might be exactly what you ...

There’s simply no replacement for the real thing. Fuel additives can get you pretty darn close in many cases, though. Not everyone has the means to tear down an engine to clean things up ...

But there may be cases where even the best of them could use a little help with an additive. Related: Do You Really Need to Change Your Oil Every 3,000 Miles? One of the most common fuel additives ...

Lucas Oil makes a variety of powerful fuel additives and their products are some of the most commonly used for comprehensive fuel treatments. For nearly three decades, Lucas Oil has been one of ...

Q. I perform routine maintenance on my family’s cars and just want to know your thoughts on Marvel Mystery Oil as both a fuel additive and oil additive. Is this product really beneficial for both?

That's not even mentioning the number of diesel additives available on the market for altering and improving your fuel's performance. On that last point, if you've visited an ExxonMobil gas ...

Even tried-and-true diesel motors need proper care and feeding to keep clattering along, and proper diesel fuel additives will help with just that. If you want your Volkswagen TDI or Duramax to ...

Some engine oil additives can slow or temporarily stop oil leaks by softening old, hardened gaskets and seals, for example, and fuel injector cleaners can actually work wonders for your vehicle.

Related: Do I Need to Use Engine Oil or Fuel Additives? Signs that’s not enough, though — and that a professional cleaning might be in order — can include rough idling, stalling, misfires ...