Do Fuel Additives Work?

Intake Valves PI

Store shelves are littered with fuel additives that claim to provide a number of benefits, including… • Increased fuel economy • Smoother engine operation • Reduced emissions • Extended engine life • Maximum horsepower

‘Tis the Season for Frozen Diesel Fuel: Here’s What to Do About It

Are you in the holiday spirit? The season is bustling, and everyone is burning the candle at both ends. There’s no time to waste, especially stuck on the side of the road after the diesel fuel in your car or truck froze overnight. Are you prepared?

Prepare Your Vehicle for Winter

Cold-weather oil performance Snowy Car Windshield

Originally posted Nov. 11, 2016 With the worst of winter right around the corner, now is a good time to get your vehicle prepared for the worst. Being based in northern Wisconsin, we at AMSOIL talk a lot about how synthetic lubricants make life a little easier, as the cold air starts to pierce our

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What’s New about Reformulated OE Synthetic Motor Oil?

First Signature Series Synthetic Motor Oil, then XL Synthetic Motor Oil. Now, OE Synthetic Motor Oil is our latest oil to undergo a formulation change and facelift.

How Often Should I Change Front or Rear Differential Fluid?

Chevrolet Towing Camper

It depends on your vehicle, driving conditions and differential fluid quality. That’s a pretty vague answer, but it’s true. If you drive your truck primarily on the highway in temperate conditions and rarely tow or haul, you likely don’t need to change front or rear differential fluid very often.

Reformulated XL Motor Oil: Stronger for Longer

So, what’s new about reformulated XL Synthetic Motor Oil? In essence, XL protects better for longer, yet costs the same as before. It’s the perfect choice for enthusiasts who want to do something extra for their vehicle.

How Engine Wear & Deposits Kill Horsepower

Most people equate engine wear and deposits with a sudden, catastrophic engine failure that leaves you stranded alongside the road. In reality, wear and deposits are more likely to erode engine power and efficiency over time. Here’s how it works and what you can do about it.

Why Does Motor Oil Turn Black?

Motor oil turns black during use for a couple reasons: 1) Heat cycles During your drive to work in the morning, your engine reaches normal operating temperature (typically 195ºF-220ºF), heating the motor oil. Then the oil cools while your car sits in the parking lot.

Why You Should Be Wary About Using Break In Oil in Powersports Equipment

general Motorcycle Oil Change

Marco Navarro asks on our Facebook page about break in oil, with attention paid to powersports engines. Thanks for the question, Marco. Let’s get to it. Maintaining an engine is a constant fight against wear.

The Pros and Cons of Semi-Synthetic Oils and Synthetic Blends

Motor oil

Scott D. Galbreath asks via our Facebook page about the pros and cons of synthetic blend motor oils. Thanks for the question, Scott. Making sense of motor oil can be confusing and frustrating. Choosing among full synthetics, synthetic blends, semi-conventional, conventional, high-mileage full synthetics and synthetic blends is just the beginning.