What are the causes of Haval engine oil leakage?
4 Answers
Haval engine oil leakage causes: 1. Aging of oil rubber sealing ring: When the car reaches a certain mileage, the parts of the car body will age. When the oil rubber sealing ring of the car ages and wears out, the sealing effect will weaken, and the oil will leak from it; 2. Overload of transmission oil volume: When the car's transmission is overloaded with too much oil, the oil seal will be loosened or fall off due to force, and some oil will leak from it. Haval is a sub-brand of Great Wall Motors. The Haval brand, mainly focusing on SUV models, operates in parallel with the Great Wall brand, and includes three car series: H series, M series, and F series.
I've been driving for over a decade and have seen plenty of Haval engine oil leaks. The main causes are aging and deformed gaskets causing leaks, with high temperatures hardening and failing the rubber; oil pan screws loosening or corroding leading to seepage, sometimes poor road conditions causing rocks to crack the oil pan directly; engine oil seals like the crankshaft seal wearing out can also leak, especially in older vehicles. Oil leaks not only waste oil, leaving stains on the ground and polluting the environment, but can also drip onto the exhaust pipe and cause fires. Last year, my own Haval H6 had a similar issue, and after much hassle, it turned out to be a faulty valve cover gasket. I recommend owners check the chassis monthly for any oil stains and seek a professional shop for part replacement if found. Don't skimp on regular maintenance to prevent small issues from becoming big troubles—safety first.
I've been in the auto repair business for seven or eight years and have handled many cases of Haval engine oil leaks. The most common cause is gasket issues, such as aging or cracked valve cover gaskets or oil pan seals, which allow oil to seep out. Improperly installed or over-tightened screws can also lead to leaks. Another major cause is damaged oil seals, such as failing camshaft seals. When diagnosing, first check the leak location: oil at the top of the engine indicates a bad valve cover gasket, while oil stains at the bottom point to an oil pan issue. Don't underestimate this problem—severe oil leaks can lead to oil starvation and cylinder scoring, which are costly to repair. I recommend checking and addressing it as soon as possible, using high-quality replacement parts. Don't wait until the engine is ruined—it saves both money and hassle.
As an automotive enthusiast, I've studied Haval engines where oil leaks are often caused by insufficient seal design or material aging. The thermal expansion and contraction during engine operation can lead to leaks if rubber gaskets lack elasticity; plastic oil pans are prone to cracking upon impact; and long-term friction wears out seals like crankshaft seals, causing leaks. The Haval H6 frequently experiences these issues, compounded by its low chassis susceptibility to damage. Solutions include opting for OEM or high-strength replacement parts, avoiding non-professional modifications, regularly cleaning engine grime, ensuring good heat dissipation, and minimizing oil leak risks.
