Interesting Oil Change View

The article makes a big deal about advances made in the oil itself. That may be true, I don't know.


But I think engine advancements, even relatively old ones, have more to do with the increased oil change interval.

• Pressurized cooling systems that allow the engine to run hotter and boil out the water and gas that gets into the oil.
• Anything that makes the engine heat up quicker like an exhaust manifold heat riser, or those stoves that pull intake air from around the exhaust manifold. In a cold engine, fuel can condense on the cylinder walls and run down into the crankcase contaminating the oil.
• Anything that makes the engine run leaner/cleaner, especially electronic fuel injection and better sealing rings

If 3000 miles made sense back in the 50's it's defintely not needed anymore.