Billowing blue smoke from a car typically indicates oil burning in the combustion chamber. Unlike white smoke, which is often related to coolant, blue smoke signals an issue with engine oil.

An American sailor said the Portuguese-flagged cargo ship ‘came out of the blue’ as it smashed into his oil tanker ...

The AA has explained the most common reasons for white or blue smoke coming from a car exhaust, and advice on what to do if it happens. While white smoke coming from your exhaust could be due to ...

Thick blue or gray smoke that doesn't dissipate quickly ... If your engine is burning enough oil to produce visible exhaust smoke, the oil level will drop over time and require periodic top ...