# Why Is My Car Leaking Oil? | Otto Explains | AutoTronix **Section:** Otto Explains **Canonical:** https://autotronix.om/otto/oil-leak-under-car **Language:** English **Arabic version:** https://autotronix.om/ar/otto/oil-leak-under-car --- ## Short Answer A dark patch of fluid under a parked car usually points to an oil leak from a worn seal or gasket, most commonly from the engine or the gearbox. The source matters because engine oil, gearbox oil, and other drivetrain fluids serve different systems, wear differently, and are diagnosed differently — identifying exactly where the leak starts is the first step before any repair. --- ## What Does the Location and Colour of the Leak Tell You? A leak from the front or centre of the engine bay is more likely engine oil, while a leak further back, closer to the gearbox, points toward gearbox oil. Engine oil is typically amber to dark brown; gearbox fluid can be red, brown, or dark depending on the vehicle and fluid type. A small drip after parking is different from a steady puddle — the size and speed of the leak both feed into how urgent the assessment is. --- ## What Are the Most Common Sources of an Oil Leak? Common sources include a worn valve cover gasket, a failing oil pan gasket, a worn front or rear crankshaft seal, a failing gearbox output seal, or a loose drain plug. In Oman's heat, rubber seals and gaskets harden and shrink faster than in cooler climates, which is why seal-related leaks are common on vehicles that have spent years in this climate regardless of mileage. --- ## Why Does the Leak Source Matter, and Which Division Helps? Engine oil and gearbox oil leaks are diagnosed and repaired differently, and mixing them up leads to the wrong repair being quoted. AutoTronix Garage inspects and repairs engine and gearbox seals and gaskets once the source is identified, while AutoTronix Lab can assist with electronic diagnostics if a sensor or module issue is suspected alongside the leak. --- ## Common Questions **Is it safe to keep driving with an oil leak?** It depends on the rate of loss and the source. A very slow seep is less urgent than a leak that visibly drops the oil level within days, which risks the engine or gearbox running low on lubrication. **Can I tell the difference between an oil leak and condensation from the AC?** Yes — AC condensation is clear water, typically appears under the middle of the car, and is completely normal in Oman's humidity. Oil is coloured and has a distinct smell, usually closer to the front of the vehicle. **Does a small leak always need immediate repair?** Not always immediately, but it should always be diagnosed to confirm the source and rate of loss. --- ## Related Services - Oil leak diagnosis and repair: https://autotronix.om/garage/oil-leak-diagnosis-repair - Engine repairs: https://autotronix.om/garage/engine-repairs - Advanced diagnostics: https://autotronix.om/lab/advanced-diagnostics --- ## Book a Diagnostic Scan WhatsApp: +968 9966 8600 https://api.whatsapp.com/send/?phone=96899668600&type=phone_number&app_absent=0 Location: Mabellah Industrial, Street 7, Muscat — Saturday to Thursday, 9 AM to 9 PM