If you notice a hot oil smell while driving, it usually means engine oil is leaking onto hot engine or exhaust components. This can create smoke, unpleasant odours, and even a fire risk if left unresolved. An inspection is necessary to locate the leak and prevent further engine damage.

What does it mean if you smell hot oil?

A hot oil smell typically indicates that engine oil is escaping from its sealed system and burning on hot engine parts such as the exhaust manifold. It may also point to low oil levels, worn seals, or overdue oil changes.

Common causes of a hot oil smell

• Leaking valve cover gasket
• Leaking oil pan gasket
• Worn crankshaft or camshaft seals
• Loose or damaged oil filter
• Overfilled or old engine oil
• Spilled oil during servicing

Why do you need to fix this problem quickly?

Oil leaks can cause engine damage by reducing lubrication levels, leading to overheating and accelerated wear. Burning oil on hot surfaces can also create smoke, unpleasant smells, and in rare cases, a fire hazard.

How do you know when to get it checked?

You should book an inspection if:

• You notice a persistent hot oil smell while driving
• You see smoke from the engine bay or exhaust area
• You find oil spots under the car
• The oil level drops more quickly than usual
• The oil warning light comes on

What happens during an assessment?

A mechanic will:

1. Check oil levels and condition
2. Inspect for visible leaks around gaskets, seals, and the oil filter
3. Look for oil residue on the exhaust or engine components
4. Clean the affected area to trace the source of the leak
5. Recommend repair, such as gasket or seal replacement

How much does it cost to fix?

Minor oil leak repairs (e.g., valve cover gasket) typically cost $200–$500. More extensive repairs, such as oil pan or crankshaft seal replacement, may range from $600–$1,500+ depending on the vehicle.

Is it unsafe to drive with a hot oil smell?

Yes. Driving with an oil leak risks low oil levels, engine overheating, or even fire if oil burns on hot surfaces. It should be inspected and repaired immediately.