Oil Leak Diagnosis & Repair in Sunbury-on-Thames
Oil leaks are rarely where the drip appears. Oil runs, gets blown around by airflow and collects at the lowest point, so finding the source takes cleaning, inspection and sometimes UV dye.
Fixing leaks early protects belts, mounts, wiring and exhaust components from oil contamination — and reduces the risk of burning-oil smells or fire hazards.
Safety first: If oil is dripping onto the exhaust or you see smoke, stop driving and contact us.
Common signs
Symptoms worth checking
- Spots of oil under the car
- Burning oil smell, particularly after driving
- Smoke from under the bonnet
- Low oil level warnings
- Oily residue on the engine or underbody
Common leak sources
Typical sources include rocker or cam cover gaskets, oil filter housing gaskets, sump gaskets, crankshaft seals, turbo oil lines and oil cooler seals. On some engines, specific gaskets are known weak points.
We clean the area, run the engine, and trace the leak to its origin before quoting.
What we check
- Oil level and condition
- Gaskets and seals
- Oil filter housing and cooler
- Turbo feed and return lines
- Contamination of nearby components
What we can do
- Gasket and seal replacement
- Filter housing and cooler repairs
- Sump and seal repairs
- Cleaning of affected areas
How it works
The process
- 01
Inspect and clean.
- 02
Trace the leak, using dye where helpful.
- 03
Quote the repair.
- 04
Repair and recheck.
Why The Factory
Main-dealer capability, independent service
A Master Technician-led workshop with seven mechanical ramps, a dedicated MOT ramp and dealer-level diagnostics. Faults are shown to you and additional work is quoted before it goes ahead.
We stand behind the work we carry out. Parts and workmanship are covered in accordance with your statutory rights and any applicable manufacturer or supplier warranty. Please ask us for details relevant to your repair.
- Experienced engine technicians
- Ramp-based inspection
- All makes and models
Free local collection & return
Available by arrangement within approximately five miles of our Sunbury-on-Thames workshop. Further afield? Just ask us.
FAQs
Oil Leak Diagnosis & Repair: your questions answered
Why is my car leaking oil?
Usually a degraded gasket or seal, though loose fittings, damaged sumps or failed oil lines are also possible.
What does burning oil smell mean?
Often oil is leaking onto hot exhaust components. It should be inspected promptly.
Can an oil leak damage other components?
Yes. Oil can degrade rubber belts, mounts, hoses and wiring insulation.
Is it safe to drive with an oil leak?
A small seep may not be urgent, but a leak onto hot parts, a rapidly falling level or an oil warning light needs immediate attention.
How do you find where an oil leak is coming from?
We clean the area, run the engine, inspect from above and below and use UV dye when needed.
Related services
Engine Repairs
Diagnosis and repair of misfires, leaks, poor running and mechanical faults.
Wet Belt Replacement
Inspection, diagnosis and replacement of belt-in-oil timing systems.
Car Servicing
Servicing to the manufacturer schedule for all makes and models, petrol to full EV.
Turbocharger Repairs
Confirming turbo faults properly and repairing the cause, not just the symptom.
Need help with oil leak diagnosis & repair?
Send your registration and a quick description on WhatsApp, or call the workshop.
The Factory, Harris Way, Sunbury-on-Thames TW16 7EL