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

Synthetic blends and semi-synthetics both use a combination of conventional and synthetic base oils.

December 17, 2021

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Diesel Ask AMSOIL

What is Black Diesel Smoke?

Modern diesel engines in proper working order should not produce black smoke under most conditions.

December 16, 2021

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Cars & Trucks Ask AMSOIL

5W-20 vs 5W-30 vs 10W-30: What’s the Difference?

The primary differences are their viscosities when cold and once your engine has reached operating temperature.

December 16, 2021

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Feel Secure Using AMSOIL Synthetic

December 3, 2021

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How to Clean a Gun for Hunting Season

Don't let a misfire or jam at the worst time ruin your next hunt. Watch how to clean a gun...

September 2, 2021

Synthetics remain fluid in cold weather to ease cold starts and improve wear protection.

What Motor Oil is Best for Winter? (And Other Cold-Weather Questions)

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Why are There Different Chainsaw Oil Mix Ratios?

Most manufacturers recommend a 50:1 chainsaw oil mix ratio, but some call for 40:1 and even 32:1 in older saws....

August 30, 2021

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AMSOIL Helps Awaken 500+ HP Cummins 4BT Engine

We help Kenny Hauk's crew turn a stock 105-hp Cummins 4BT engine into a 500-hp powerplant for his latest build.

August 25, 2021

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AMSOIL Synthetic Greases

AMSOIL synthetic greases are designed to outperform competing products by providing extended service intervals, excellent pound-out and washout resistance, low-temperature fluidity...

August 18, 2021

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ATV/UTV Diesel Marine Motorcycles Snowmobile Small Engines Dirt Bike Cars & Trucks Product Highlights Ask AMSOIL

What is Engine Detonation?

Engine detonation refers to spontaneous combustion of the remaining fuel/air mixture in the chamber after normal spark-initiated combustion.

July 21, 2021

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Product Highlights Ask AMSOIL

Do Transmission Fluid Additives Work?

Transmission additives supposedly fix erratic shifting, leaks and other problems. However, testing has shown they can make transmission performance worse.

July 19, 2021