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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Should I Switch to a Lighter Viscosity Oil in Winter?

frozen diesel - thermometer in winter

Motorists sometimes ask if they should use a lighter viscosity of motor oil once winter arrives. Yes – provided your vehicle manufacturer allows it. 



How Oil Consumption Affects Your Turbo Diesel’s Exhaust System

Diesel Truck - differences between gas and diesel engines

Ever wonder why engines have that long wiry thing with the small plastic handle? A.K.A. the dipstick? “Come on, Mark, it’s for measuring proper engine oil volume,” you say.



Which of These Competitors Will Win the 2018 Diesel Power Challenge?

Diesel Power Challenge 2016

Once again, the 2018 Diesel Power Challenge is upon us with 10 competitors and 1 alternate gearing up for another battle of the diesel-fittest.



A Beginner’s Guide to Motor Oil: What You Need to Know

working on willys jeep

If you awoke this morning asking yourself, “Gee, I wonder what there is to know about motor oil,” you’re in luck. Here, we present a primer on motor oil fundamentals.



Should You Use Diesel Competition Oil?

dodge ram 5.9 cummins dyno pull

April is here, and for those who love to spend time at the drag strip challenging their reaction time, on a dirt strip hooked to a sled, or tied down on a roller dyno grunting for power, the diesel competition season is upon us.



Why Does My Car’s Engine Burn Oil?

tailpipe exhaust smoke burning oil

The simple answer: It’s probably wearing out. Over time, the piston rings have likely become worn or stuck in their grooves, preventing them from sealing tightly against the cylinder wall.



What Is Cetane and Why Does It Matter?

diesel gas lines pump

In the same way that octane ratings indicate the ignition stability of gasoline, cetane values are assigned to diesel fuel to rate its combustion quality.



Do Motor Oil Additives Work?

conventional and synthetic oil

What do motor oil additives do? The shelves at your local auto parts store are full of aftermarket motor oil additives and oil treatments that promise a cornucopia of benefits, such as… Increased fuel economy Reduced friction Maximum horsepower Improved engine cleanliness To provide this added performance, aftermarket motor oil additives use different chemical components

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How a Differential Works (and the Type of Gear Lube to Use)

Think of all the devices we take for granted that improve our lives. The refrigerator. The microprocessor. The air conditioner. The spork.