Why Does My Engine Knock? 3 Possible Explanations.

Do you hear an engine knocking sound when you hit the gas? It could be due to pre-ignition or detonation. Here’s what you can do about it.



GM dexos and LSPI: Making Sense of New Oil Specifications

check your oil for vehicle longevity

As engine-operating conditions grow more severe, so do the demands placed on your motor oil.



What’s New about Reformulated OE Synthetic Motor Oil?

amsoil oe synthetic oil

First Signature Series Synthetic Motor Oil, then XL Synthetic Motor Oil. Now, OE Synthetic Motor Oil is our latest oil to undergo a formulation change and facelift.



Reformulated XL Motor Oil: Stronger for Longer

new amsoil oe xl series

So, what’s new about reformulated XL Synthetic Motor Oil? In essence, XL protects better for longer, yet costs the same as before. It’s the perfect choice for enthusiasts who want to do something extra for their vehicle.



Why Did We Reformulate Signature Series Synthetic Motor Oil?

amsoil signature series

Simply put, we reformulated Signature Series Synthetic Motor Oil to solve problems. For all the derision heaped upon the internal-combustion engine, it remains our primary mode of propulsion. And, despite the gains of hybrids and electric vehicles, it will remain so for the foreseeable future.