See also:

Crankcase Emission Control System
The positive crankcase ventilation system is employed to prevent air pollution caused by blow-by gases being emitted from the crankcase. This system supplies filtered fresh air to the crankcase th ...

INTERIOR
Roomy and a step above casual, the Sonata's interior is attractive. The seats' cloth upholstery was thick and nice looking with a checked pattern. Some cars have bizarre shapes and prints in the u ...

What About Gasohol?
Gasohol (a mixture of 90% unleaded gasoline and 10% ethanol or grain alcohol) may be used in your Hyundai. However, if your engine develops driveability problems, the use of 100% unleaded gasoline ...