Burning oil can be a troubling issue for car owners. It not only indicates potential engine problems but can also affect the vehicle’s performance. Here’s a simplified guide in 5 steps to help you understand why your car might be burning lubricant and what you can do about it.
Step 1: Check for Worn Piston Rings
Worn piston rings are a common cause of oil burning. When these rings wear out, they fail to seal the combustion chamber properly, allowing lubricant to leak into the chamber and burn along with the fuel. If you notice excessive exhaust smoke or reduced engine performance, worn piston rings could be the culprit.
Step 2: Inspect Valve Seals
Valve seals play a crucial role in preventing fluid from entering the engine’s cylinders. When they deteriorate, It can seep into the combustion chamber and burn. This issue often leads to blue-tinted exhaust smoke and an increase in lubricant consumption.
Step 3: Examine the PCV Valve
A malfunctioning Positive Crankcase Ventilation (PCV) valve can cause oil burning. The PCV system helps regulate the pressure inside the engine, but when the valve gets clogged or stuck, it can allow excess fluid to enter the combustion chamber. Replacing the PCV valve can solve the problem in many cases.
Step 4: Look for Oil Leaks
Sometimes, burning lubricant can be the result of external leaks. If they leaks onto hot engine components, like the exhaust manifold, it can burn off and create a burning smell. Check for visible signs of oil leaks around the engine and address them as soon as possible to avoid further damage.
Step 5: Use High-Mileage Engine Oil
If your car is older or has high mileage, switching to high-mileage engine lubricant can help reduce oil consumption. This specialized lubricant is designed to protect aging engine seals and reduce lubricant burn. It’s a practical step to minimize fluid burning, especially if the car’s seals are starting to show signs of wear.
