What Causes Oil Leakage at the Supercharger Exhaust Pipe?

2 Answers
DanteRose
07/24/25 10:46am
Oil seal ring aging, poor lubrication, supercharger damage, etc. Here are the specific details: Oil seal ring aging: After years of driving, some parts of the car will inevitably age. If the seal ring ages, it will cause oil leakage, and in this case, the seal ring needs to be replaced. Poor lubrication: If there is poor lubrication inside the supercharger, it can easily cause friction between components, leading to part wear and oil leakage. In this situation, it is necessary to add engine oil or replace the worn parts. Supercharger damage: If the car is involved in a collision that damages the supercharger, oil leakage will definitely occur. In this case, the supercharger must be replaced directly.
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LauraRose
08/11/25 5:48am
I've driven turbocharged cars for many years and have also encountered oil leakage from the exhaust pipe. That time, after a long-distance trip, I noticed oil stains under the exhaust pipe when I got out of the car, along with a faint smell of burning engine oil. When I took it to the repair shop, the mechanic checked and said it was mainly due to the aging and cracking of the turbocharger's seals, causing oil to leak through the gaps. Turbochargers operate at high temperatures, and rubber seals can harden and break over time under prolonged heat, especially in older cars like mine that frequently run on highways. Other possible causes include clogged oil passages leading to increased oil pressure, forcing oil to leak, or improper installation and loosening of connections. Oil leakage is harmful—not only does it waste engine oil and cost money, but oil dripping onto the hot exhaust pipe poses a fire risk and pollutes the environment. I promptly replaced the seals, and the repair wasn't expensive. Since then, regular checks for oil stains in the engine bay have helped prevent further issues.
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