On page 22 Battle armor in space get six times their jumping MP in fuel, they also can use extra fuel tanks if they have them but I can not find any where on how much extra fuel (points) they provide per tank. This info is not mentioned in Tech Manuel or Strategic ops (all I know is that a fuel tank is 50kg).
Edit, I found it, in Tech manual v3.01 errata mentions it, being 40 points per tank. Managed to miss this the first time I looked at the errata document...
40 points is a fair bit for 50kg...