THE EVERYDAY ENGINE OIL GUIDE
Understand your
engine oil.
Clear answers for what goes under the bonnet.
Make sense of oil grades, maintenance and your car’s requirements. Start with the basics, then check the details for your exact vehicle.
Plain English · Source-led guides · Your manual comes first
Better understanding. Better questions.
A practical starting point for everyday car owners.
FIND YOUR STARTING POINT
A little knowledge goes a long way.
Explore the question you have today.
START WITH THE ESSENTIALS
What does engine oil do?
Lubrication is only the beginning. Learn how oil supports heat transfer, cleanliness and the moving parts inside your engine.
A clear beginner guide to what engine oil can—and cannot—do.
BEFORE YOU CHOOSE AN OIL
Your car. Your manual.
Your starting point.
A familiar brand or viscosity number is not the whole answer. The same model name can cover different engines and regional versions.
01
Identify your vehicle
Start with the model year, engine and country of sale.
02
Find the matching manual
Read the oil section and note the required grade and performance specification.
03
Keep the details together
Use them when comparing a bottle or discussing a service quote.
A FEW USEFUL ANSWERS
Good questions. Clear starting points.
What does RedOil cover?
Engine oil basics, comparisons, routine maintenance questions and selected car specifications. We help everyday owners understand manuals, labels and servicing information.
Is RedOil useful outside the United States?
General explanations are written for English-speaking readers worldwide. Vehicle-specific information applies only to the model year, engine and market stated in the guide. Check your local manual.
Does RedOil sell engine oil?
No. RedOil is an educational publication. There is no product checkout or oil ordering service on this website.
KNOW THE SOURCE
Built around useful explanations.
Our guides point to relevant sources and explain their limits. An article cannot inspect your engine or replace the instructions for your vehicle.