Synthetic vs. Conventional Oil: The Definitive Guide

Synthetic vs. conventional oil

Many motorists are switching to synthetic motor oil for the first time. Find out everything you need to know about synthetic vs. conventional motor oil.



Do Older Engines Need Oil With ZDDP Additives?

Using a high-zinc oil with a high dose of ZDDP additives helps protect classic car and hot rod engines. AMSOIL Z-ROD Synthetic Oil contains 1400 ppm zinc.



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

Pulling oil dipstick

Motor oil seems simple. You pour it in your engine and drive away. But motor oil is far more complex…and important. Here’s what you need to know.



Prep Your Vehicle Now for Your Summer Road Trip

Summer road trip

Summer road trips are supposed to bring lifetime memories, not frustration due to car trouble. Prep you vehicle now for you next road trip.



Should I Run Straight-Weight or Multi-Weight Oil in my Muscle Car?

Mopar muscle car

Straight-weight oil can offer some benefit with viscosity retention, but a good multi-weight oil delivers better start-up protection.



ILSAC GF-6, API SP & dexos: Making Sense of New Oil Specifications

Oil dipstick

AMSOIL synthetic motor oils meet or exceed the latest performance specifications, including GM dexos1 Gen 2, ILSAC GF-6 and API SP.



Selling Your Car? Do this to Make the Most Money

Sell car

Selling your car? Take care of these maintenance issues, give it a good cleaning and gather all the required paperwork first to get the best price.



What Does Motor Oil Do?

What does motor oil do?

The primary functions of motor oil are to reduce wear and friction. But motor oil must do more than that for your engine to run well and last as designed.



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

Car driving in snow during winter

Synthetics are a better choice when looking for a winter motor oil. They remain fluid in cold weather to ease cold starts and improve wear protection.



How Engine Sludge Forms. And How To Prevent It.

Engine sludge is a black gelatinous substance that wreaks havoc in engines. Combatting engine sludge begins with using a high-quality motor oil.