John Baker

Recent Posts by John Baker

How to Protect a Motorcycle Wet Clutch (and How it Works)

Motorcycle wet clutch

Motorcycle oil and dirt bike oil must be formulated with the correct frictional properties to ensure smooth, consistent shifts and long wet clutch life.



What’s the Difference Between Motorcycle, Dirt Bike and ATV Oil?

Differences between motorcycle, ATV/UTV and dirt bike oil.

Motorcycles, ATVs/UTVs and dirt bikes present different challenges to motor oil, making it tough for one formulation to deliver optimum performance in all applications. It’s best to use an oil made specifically for the application.



What Causes Motor Oil Contamination?

Checking oil for contamination

Motor oil contamination is the result of chemical changes to the oil, in addition to the accumulation of dirt, fuel, metal particles and other contaminants.



What Are Piston Rings?

What do piston rings do?

Piston rings seal the combustion chamber, keeping combustion gases in and oil out. Properly working piston rings are vital to maximizing engine power.



What a Good Motorcycle Coolant Should Do

Motorcycle coolant

A good motorcycle, ATV or dirt bike coolant must dissipate heat, prevent corrosion and last for years. And it should be pre-mixed with high-purity water.



How to Adjust Snowmobile Belt Deflection

Adjust snowmobile belt deflection

In this step-by-step video, find out how to adjust snowmobile belt deflection to ensure your sled delivers maximum performance.



Expert Backcountry Snowmobiling Riding Tips

Backcountry snowmobiling

We show you how to identify potential avalanche areas, free a stuck sled and sidehill your snowmobile when backcountry snowmobiling.



What Kind of Transmission Fluid Do I Need?

What kind of transmission fluid do I need?

We provide all the info you need to find the right kind of transmission fluid for your vehicle. Plus, find out how to check transmission fluid.



What is the Best Snowmobile Oil?

Best snowmobile oil

To earn the title Best Snowmobile Oil, your oil must excel in these three performance areas. AMSOIL INTERCEPTOR delivers, and here’s the proof.



How Does a Two-Stroke Power Valve Work?

Mountain snowmobile

Two-stroke power valves offer the best of both worlds – excellent throttle response and good top-end power. Here’s how they work.