Volkswagen Golf Service & Repair Manual: Trade names and designations
| Refrigerant R134a is currently available under the following
trade designations: |
 Note
| Other trade designations may be used in other countries. |
| Among the large selection of various refrigerants, only this
one may be used for vehicles. The designations Frigen or Freon
are trade names. They apply also to refrigerants which must not
be used in vehicles. |
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Colour
Like water, the refrigerant is colourless both in the vapour state and the
liquid state. Gases are invisible. Only the boundary layer between gas and
liquid is visible. (Fluid level in indicator tube of charging cylinder for
bubbles in sight glass.) Liquid refrigerant R134a may appear coloured (milky) in
a sight glass. This cloudiness is caused by partially dissolved refrigerant oil
and does not indicate a fault.
In an enclosed container that is not completely full,
refrigerant evaporates as vapour at the surface in a quantity
sufficient to form an equilibrium between vapour a ...
Other materials:
Engine oil consumption
First read and observe the introductory information
and safety warnings Engine oil consumption can vary from engine to engine
and can change during the working life of an engine.
Depending on how you drive and the conditions in which the car is used, oil consumption
can be up to 1.0 litre/ ...
Switch and sender in refrigerant circuit and related connections
Note
See vehicle-specific refrigerant circuit for switching
pressures, removing and fitting switches, together with switch
arrangement and versions.
→ Rep. gr.87
...
Causes of vibration
Vibration can have a number of different causes. Vibration
can also be caused by tyre wear. Tyre wear caused by driving is
not always evenly spread across the entire running surface of
the tyre. This causes slight imbalances which affect the smooth
runni ...
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Vapour pressure