Do All Older Highlander Models Burn Oil?
1 Answers
Most vehicles experience some degree of oil burning, with the key difference being the amount consumed. Engine oil naturally has a certain consumption rate, and excessive consumption indicates an oil burning issue. Here are the main causes of oil burning: Incorrect Oil Specifications: Using low-quality engine oil can accelerate wear. Additionally, oil viscosity that is either too low or too high can lead to poor engine lubrication, increasing wear on piston rings and cylinder walls, reducing sealing performance, and resulting in oil burning. Excessive Clearance: Excessive clearance between piston rings and cylinder walls, improper piston ring installation, or degraded sealing can allow oil from the cylinder walls to enter the combustion chamber, causing oil burning.