XCP ONE is a multi-purpose spray that displaces moisture, lubricates and protects. Developed for professional use, it has been the AA's product of choice for several years. In comparitive tests it outperforms the established product that comes in a blue and yellow can ;-) by a significant amount.
Use it to loosen bolts, displace moisture from your electrics, lubricate that squeeking bush etc. etc.
You may have seen Fuzz Townsend and Ed China endorsing the product and we have to agree with the stars, it's a great product.
A 'Green' version is also available which shows no reduction in performance but a lower inpact on the environment.