DOT 3 and DOT 4 Brake Fluid: What’s the Difference?

Glowing red brake rotor from heat

The primary difference between DOT 3 and DOT 4 brake fluid is their respective boiling points. I suspect I know your next question. But first, some background. The U.S. Department of Transportation (DOT) classifies brake fluid into four main categories:



What Should I Do with Used Motor Oil?

Container for used motor oil recycling

While most motorists pay someone to change their oil, 25 percent of us still crawl under our vehicles and do it ourselves. When we’re done, what do we do with the used motor oil?



Synthetic vs. Conventional Oil: The Definitive Guide

AMSOIL, conventional vs. synthetic oil, cold pour

In the battle of synthetic vs. conventional oil, most motorists today know that synthetic oil emerges victorious. It’s widely understood that synthetic oil provides improved wear protection, engine cleanliness and fuel efficiency, among other benefits. Synthetic oil also lasts longer, offering increased convenience and cost savings. But what makes synthetic oil better than conventional oil?

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How to Pick the Right Motor Oil for Your Car

conventional and synthetic oil

The glut of motor oils available can quickly induce analysis paralysis. How do you pick the right motor oil for your car?



How Much Oil Does My Car Need?

The answer seems simple: probably about five quarts. But, if you drive a small car with a four-cylinder engine, it’s likely closer to four quarts. However, the V-8 engine in your truck could require about seven quarts. My in-laws’ RAM diesel pickup takes 12 quarts of motor oil.



What is Fuel Dilution (and Why is it Bad)?

check your oil for vehicle longevity

Fuel dilution occurs when gasoline or diesel fuel infiltrate your engine’s crankcase and dilute, or “water down,” the motor oil.



What to do About Frozen Diesel Fuel

frozen diesel - thermometer in winter

What if I told you AMSOIL has a product that provides as much as 32ºF better protection against cold-temperature diesel fuel gelling than Howes Lubricator Diesel Treat*? You know – Howes, one of the largest diesel fuel additive companies in the U.S.



The Diesel Upgrade that Should Top Your List

Diesel Power Challenge 2016

Enthusiasts who build serious diesel power are a special breed. They can invest the value of two new Toyota Tacoma trucks into a single truck capable of 1,200 hp and 2,100 lb-ft torque.



What Causes Engine Oil Oxidation?

How to change your oil

As you might expect, oxygen causes engine oil oxidation. Oxygen comprises about 20 percent of our atmosphere. It’s the third most common element in the universe. Without it we’d all be doomed. And yet too much of it can cause problems inside your engine.



Why Does Motor Oil Turn Black?

How to change your oil

What causes black motor oil? And when your oil darkens does it mean it’s time to change it? Well, there are a couple of factors that can cause the former. Let’s dig in. Factors causing black motor oil Heat cycles naturally darken motor oil During your drive to work in the morning, your engine reaches

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