Automatic Gearbox Fluid (ATF)

What is a Automatic Gearbox Fluid (ATF)?
Automatic Gearbox Fluid or Automatic Transmission Fluid (ATF) is specifically designed for use with auto gearboxes. It's an oil based fluid with additives that make it particularly good at maintaining and protecting the parts inside the gearbox.
What problems can be caused by this part?
How much does it cost to replace the Automatic Gearbox Fluid (ATF)?
The gearbox fluid itself isn't particularly expensive, expect to pay between £10 - £20 per litre depending on the brand/quality. Replacing the oil will usually take up to an hour of labour so factor that in to the cost, an average cost would be £100 - £200. This will obviously depend on the labour rate of the mechanic you use and the oil amount required by your make/model's gearbox.
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