The same is true with RC Cars.  The following are effective and necessary tips to store and keep those vehicles in great shape.

Believe it or not, the fuels used in nitro trucks or cars as well as in RC Cars contain lubricants.  The lubricants in these cars actually serve to protect the engine.  This is due to the fact that not all of it gets burned when the engine runs.  This therefore results in a chassis that is coated with a lot of oil which made its exit from the car's pipe.

The way to remove this as easily as possible is by using a cleaner: one example is Simple Green. However, it is best to first remove all and any radio equipment before cleaning; after which, plug the inlets onto the engine.  Another option is by removing the engine itself. 

The chassis should then be sprayed down lightly.  Use a brush that has a firm bristle to knock away any grime.  Once the chassis has been cleaned, use a towel to dry it.  Then, re-install the removed components.

The majority of RC Cars have an electric starter.  The bearings in this starter should always be oiled and cleaned at least every week or two. 

The starter should then be removed as carefully as possible.  The use of a screwdriver is an effective way to keep the pressure on the mechanism as the starter is pulled off the plate's back. 

Spray the bearing with engine spray in order to clean it.  Oil the bearing in order to keep it running smoothly.  You will discover that once the engine and starter is reassembled, it will work almost as good as new.

Fuel should be stored in a place that is dry and - as much as possible - away from pets, children, or anyone else who could mistake the fuel as washer for the windshield. 

All in all, when fuel is stored, it could absorb water vapor over a significant amount of time, especially if the container is not sealed perfectly.  It is best to store bottles on a cardboard and not on the carpet directly or on cement.