Finland to Russia by Rlatives car, what documents needed?

[mind]

Hello every one,
I have travelled to Russia from Finland by my own car and no problem what so ever,

but this time I am taking one of my relatives car (sisters), what documents do I Need?

any idea.

Thank a lot in advance.

[foca]

exactly the same set of documents, namely registration and Russian third party insurance. there is no need for power of attorney or any other permission to use the car which is not registered to you