How to Solve the Oil Burning Issue in Haval H7?
2 Answers
Haval H7 burns oil because the engine's lubricating oil film tends to break when the engine operates at extremely high speeds, leading to poor lubrication and dry friction in rotating parts. The solution is to ensure that the oil is filled according to specifications. If the oil level exceeds the midpoint, the excess oil should be extracted by the mechanic. Additionally, the oil level should be checked the next day before driving. Relevant information about engine oil is as follows: 1. Introduction: Engine oil, also known as engine lubricant (English name: Engine-oil), has a density of approximately 0.91×10³ (kg/m³). It serves to lubricate and reduce friction, assist in cooling, seal against leaks, prevent rust and corrosion, and provide shock absorption. It is often referred to as the "blood" of a car. 2. Composition: Engine oil consists of base oil and additives. The base oil is the main component of the lubricant, determining its basic properties, while additives compensate for and improve the shortcomings of the base oil, providing new characteristics. Additives are an essential part of the lubricant.
I've been driving a Haval H7 for many years and have also encountered the issue of burning oil. This is usually related to wear and tear on the engine piston rings or aging of the valve stem seals, where oil leaks into the combustion chamber and gets consumed quickly. To address this, the first step is to check the oil consumption—drive 1000 km and see if it decreases by more than 0.5 liters. If there's indeed a problem, it's best to have a professional shop diagnose it, using a borescope to inspect the engine internals for carbon buildup or excessive gaps. In mild cases, adding oil additives can serve as a temporary fix, but the effect won't last. The fundamental solution is to replace the piston rings or seals. I had mine replaced once, costing over 3,000 yuan, but afterward, the oil consumption normalized, and fuel efficiency improved as well. Prevention is also crucial—using full synthetic oil for maintenance, checking the dipstick every quarter, and ensuring the engine warms up fully during highway driving to reduce deposits. These small habits can save you from major repairs and extend your car's lifespan.
