Is Crankshaft Oil Seal Leak Covered Under Warranty?
2 Answers
Whether a crankshaft oil seal leak is covered under warranty depends on specific circumstances. Warranty time and mileage regulations: If the warranty period has not expired and the mileage has not been exceeded, it can be covered under warranty. National vehicle regulations stipulate a minimum warranty period of three years or 60,000 kilometers, whichever comes first. Most automakers offer a warranty of 3 years or 100,000 kilometers, whichever occurs earlier. As long as neither the 3-year period nor the mileage limit has been exceeded, the warranty applies. Causes of crankshaft oil seal leakage: The parallelism between the rear oil seal pressing surface and the rear oil seal seat installation surface does not meet technical requirements. After the engine has been used for some time, the lip of the rear oil seal deforms due to uneven force, leading to oil seal damage and oil leakage. During the pressing process of the crankshaft oil seal, engine oil is used instead of the relatively more expensive non-petroleum-based lubricant, causing the oil seal to loosen or even fall off after the engine has been used for some time. If the engine has been used for too long, the rear oil seal naturally ages, developing cracks at the lip, resulting in oil leakage.
My new car has only been driven for eight months when I noticed oil stains leaking from the bottom of the engine. After inspection at the 4S店, they found that the crankshaft oil seal was damaged. Fortunately, it was still within the three-year warranty period, so they replaced the oil seal for free. If it's a manufacturing defect during the warranty period, most brands cover it, such as aging of sealing materials. However, if it's beyond the warranty period or due to improper operation, like not changing the oil on time causing damage, it won't be covered. Self-paid repairs start from around five to six hundred yuan. Don't delay oil leakage issues; losing oil too quickly can damage the engine's core components. I usually pay more attention to the vehicle's maintenance cycle, checking the chassis every 5,000 kilometers, which saves worry, money, and ensures safety.
