How Often Should I Change Front or Rear Differential Fluid?

How often to change differential fluid increases if you tow.

How often to change differential fluid depends on your vehicle, driving conditions and differential fluid quality. Learn more here.



How Often Should I Change Transmission Fluid?

Adding transmission fluid to flush machine.

How often to change transmission fluid depends on your vehicle year, make and model, along with your driving habits. Get the details here.



Is it Safe to Add 2-Stroke Oil to My Diesel Fuel?

2-stroke oil in diesel pickup

In general, it’s OK to add 2 stroke oil to diesel fuel for extra lubricity, but it’s far easier and more effective to use a fuel additive.



What Causes Engine Oil Oxidation?

XL Synthetic Motor Oil

Engine oil oxidation can cause deposits, sludge and other performance problems. Synthetic motor oils offer better oxidation resistance.



Which AMSOIL Diesel Oil is Right for Me?

Diesel truck

AMSOIL offers a full line of premium-quality synthetic diesel oils, but which AMSOIL diesel oil is right for your application? We break it down.



What Kind of Grease Do I Need?

What kind of grease do I need?

Consider several factors when choosing the correct grease, including consistency, thickener type, operating temperature, load and more.



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.



How Do I Know Which AMSOIL Products To Use?

Wondering which AMSOIL products to use? AMSOIL product guides provide an easy way to find all the right products for your vehicles and equipment.



How to Prevent Diesel Fuel From Gelling

Prevent diesel fuel gelling

Diesel fuel gelling and frozen diesel can clog the fuel filter and leave you stranded. Learn why this happens and what to do to prevent it.



6 Overlooked Heavy-Equipment Maintenance Tips

Heavy equipment maintenance

Heavy equipment maintenance is vital to keeping machinery up and running and maximizing your return on investment. Here are six tips to keep you on track.