Rear Main Seal Leaks in BYD Hybrids – A Hidden but Costly Oil Problem
⚠️ Oil on the Ground Could Mean Serious Engine Trouble
The rear main seal sits between your hybrid’s engine and transmission — and when it fails, it causes oil to drip or spray between the bellhousing and engine block. In BYD hybrids, this isn’t just a nuisance — it’s a risk to engine longevity and hybrid electronics if left unchecked.
Symptoms include:
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⚠️ Oil spots under the car (rear of engine bay)
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⚠️ Oil on gearbox casing or around bellhousing
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⚠️ Low oil level warning light coming on too often
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⚠️ Burning oil smell while driving
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⚠️ Clutch slipping or contamination (in manual models)
These leaks don’t fix themselves — and over time, they’ll lower oil pressure and lead to internal damage.
🔍 Why BYD Rear Main Seals Fail
Even on newer hybrids, we’ve seen rear seals go due to:
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Crankshaft wear or excess engine vibration
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Poor crankcase ventilation or PCV faults
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High engine hours or stop-start strain
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Worn rubber seal material (common over time)
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Heat cycles and oil condition breakdown
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Engine oil overfilled or under too much pressure
A visual check usually isn’t enough — it needs proper undercarriage inspection and oil tracing.
🧰 We Diagnose & Fix Rear Seal Leaks Where You Are
Replacing a rear main seal is a labour-intensive job — but we’ve done plenty, and we bring the workshop to your drive.
Our service includes:
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✅ Underbody inspection & oil leak tracing
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✅ Dye and UV testing for hard-to-spot leaks
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✅ Confirmation that it’s not oil pan, cam cover, or oil filter housing
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✅ Rear main seal replacement (engine/trans split required)
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✅ Engine oil top-up and system reset
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✅ Warranty on seal and workmanship
We know the layout of BYD hybrids and can quote based on your exact model before turning a spanner.
📞 Leaking Oil? Don’t Ignore It. Call 07421 186356
Oil leaks cost money — not just in fluid, but in engine life. If you’re seeing signs of a rear seal leak, call us and we’ll get you sorted without garage delays.
👉 07421 186356 👈
Website: www.fixanycar.co.uk
We cover London, Kent, Essex, Sussex, Surrey and beyond.
⚠️ Rear Seal Leaks Can Destroy Engines Over Time
Even a slow drip adds up. It can ruin clutch plates, damage sensors, and wreck your hybrid engine. Get it checked now before it becomes a full teardown job.