RE: Russian engines.

You can visit this link for more information about the modern russian engines:

http://www.amaholdings.com/tu214/p_plant.html (information about the Tu-214 and PS-90A, NK-93, RB.211 and PW2037).

Kuznetsov NK-86 is a very old engine with high fuel consumption. I have a specification for the Il-86 with this engines and this aircraft has a fuel consumption of 11,3 tons per hour.