Post Tagged with: "engine oil"

API engine oil ratings
Videos & Galleries

Video: What API Oil Ratings Mean

API oil ratings are the various classifications of engine oil set by the American Petroleum Institute, an organization that has been classifying oil since the 1930s. Because of radical additive […]

spec API motor oil symbol
Q&A

Ask Away! with Jeff Smith: Can I Mix Zinc Additive with Off-the-Shelf Motor Oil to Save Money?

Why can’t I just add a bottle of zinc additive to my oil and then just use regular off-the-shelf oil? Won’t that work just as well as those more expensive […]

Royal Purple XPR 5W-40 racing engine oil
SEMA 2017

Royal Purple Launches New 5W-40 and 5W-50 XPR Racing Oils

LAS VEGAS, NV — Outdoor temperatures swing, and when they do, oil viscosity changes with them. Precision-built race engines don’t like when their oil—their very lifeblood—is imprecise, and these engines […]

Tech / Tech Articles

Quick Guide to Diagnosing Common Oil System Problems

Your dad probably taught you the importance of checking a vehicle’s oil level shortly after you got your first Big Wheel. And right around potty training, he probably also trained you to “change […]

Tech / Tech Articles

Oil Additives: What’s In Your Oil and Why is It There?

We take motor oil for granted. Sometimes, we don’t change it as often as we should. And when we do pour in a fresh batch of oil, we don’t always do […]

Tech / Tech Articles

Basic Maintenance Series: Choosing the Right Motor Oil for Your Vehicle

Motor oil comes in many varieties. Whether you change your own oil or leave it to someone else, you’re likely going to be presented with a few different options. These […]