How Often Should I Change Front or Rear Differential Fluid?

Chevrolet silverado 1500 Towing Camper

How often you should change front and rear differential fluid depends on your vehicle, driving conditions and differential fluid quality.



Automatic Transmission Fluid & Manual Transmission Fluid: What’s the Difference?

Back in 2006, original equipment manufacturers (OEMs) offered buyers the choice between an automatic and a manual transmission in 47 percent of new cars. Fast forward to 2018, when only 2 percent of vehicles sold had a manual transmission, according to edmunds.com. 



What is a CVT Transmission?

Continuously_Variable_Transmission

“CVT” stands for continuously variable transmission. A CVT transmission uses a pair of variable-diameter pulleys and a belt or chain to provide unlimited gear ratios.



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?



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

Synthetic oil is best for winter. We’re done here. If only it were that simple. But most people want empirical data to support such claims.



AMSOIL vs. Mobil 1: How We Perform

AMSOIL provides 46% better protection against viscosity breakdown than Mobil 1

Most lists of top-10 performance mods include a turbocharger, supercharger, nitrous oxide or updated engine tune. Increasing the engine’s oxygen intake also increases fuel, which boosts power.



Should I Change Fluid in a Filled-for-Life Transmission?

Automatic transmission

Casual motorists generally take no interest in crawling under their vehicles on a Saturday afternoon. And, when was the last time you heard someone express excitement over dropping their car off at the dealership for maintenance?