Furthermore, the raw fuel washing past the rings dilutes the oil in the sump, reducing its lubricity and accelerating the wear of bearings and the crankshaft. The micro-grooves that once held the oil film for lubrication can become polished smooth or scored by contaminants, reducing their ability to retain oil.
Oil with Spark Plugs Ceramic Damage: Causes and Consequences
When fresh oil coats the ceramic insulator of a spark plug, it creates a conductive path that bypasses the spark gap, leading to a misfire and a noticeable drop in performance. A spark plug fouled by oil will appear wet and glossy, with a thick, dark residue that cannot be wiped away easily with a rag.
This often results in a hard start followed by blue smoke that clears as the engine warms up and the oil burns off. The unburned fuel that washes off the plug during a misfire can contaminate the catalytic converter.
Oil with Spark Plugs Ceramic Damage: How Oil Fouling Harms Ceramic Insulators
" This allows pressurized combustion gas to force past the rings into the crankcase, and in severe cases, it can pump oil up into the combustion chamber where it coats the plugs. Gasoline is a solvent, and when large quantities of unburned fuel enter the exhaust stream, they can overheat and melt the ceramic substrate inside the converter, leading to a complete and expensive blockage.
More About Oil with spark plugs
Looking at Oil with spark plugs from another angle can help expand the discussion and give readers a second clear paragraph under the same section.
More perspective on Oil with spark plugs can make the topic easier to follow by connecting earlier points with a few simple takeaways.
