- Combustion deposits in engines--Congresses (2)
- Diesel fuels--Congresses (2)
- Automobiles--Europe--Congresses (1)
- Automobiles--Fuel systems--Congresses (1)
- Automobiles--Lubrication--Congresses (1)
- Automobiles--Motors--Fuel injection systems--Congresses (1)
- Automobiles--Pollution control devices--Congresses (1)
- Fouling--Congresses (1)
- Gas as fuel--Congresses (1)
- Gasoline--Europe--Anti-knock and anti-knock mixtures (1)
- Internal combustion engines, Spark ignition--Congresses (1)
- Motor fuels--Congresses (1)
- Synthetic fuels--Congresses (1)