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 to Clean Car Battery Corrosion

Battery terminal corrosion can prevent your car from getting the juice it needs to start. Here’s how to clean and prevent it.



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.



Hot AMSOIL Products for Your Hot Rod

Mark Moriarity Collection - Classic Car

AMSOIL makes a full line of products for your hot rod or classic car to help keep it running and looking great. Here’s a rundown.



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.



What is a Lead Substitute (and Do I Need One)?

Lead substitute for classic cars

Engines built in the 1960s and earlier with leaded gasoline in mind can benefit from a lead substitute to help prevent valve recession and engine knock.



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 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.



Low Oil Pressure Symptoms and Causes

Low oil pressure can affect your vehicle’s performance and lead to engine damage. Here are the symptoms and causes of low oil pressure.