Automobile Engineering in ME
The engine oil viscosity is defined by ___________ ratings.

Gross vehicle weight (GVW)
Automatic transmission fluid (ATF)
American petroleum institute (API)
Society of automotive engineers (SAE)

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Automobile Engineering in ME
An imbalance wheel during vehicle operation

Bounces vertically or deflects from side to side (as seen from front or rear)
Creates a standing wave
Deflects in the vehicle's longitudinal direction
Makes large noise when its heavy point hits the road surface

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