You may want to check this in T5. In the one Drive Table that cross references Power Plant Fuel and Drive Types, both the J/H/S-Drives and the M-Drives may NOT use a Fission Plant (U-Drive/Plant). They both need a P-Plant (Overclocked Fusion Plant). The G-Drive, OTOH, is internally self-powered by Fusion-Plus Modules, and merely needs refueling yearly during standard maintenance. The N-Drive (NAFAL), is also a related drive, but it can utilize a Fission Plant (U-Drive) among others, but produces far less thrust, but is highly focused over much longer distances.
The relevant table is T5.10 Book 2, Table 13 - Starship Fuel, p. 79.
I'm either confused in my reading, or there is a contradiction between the indicated table and the text in other parts of T5 Book 2 (and perhaps a small contradiction in the text as well)
P. 56 has summaries of the different power plants and drives, and notes the
Fission Plant (
U-Plant) "cannot supply power in bursts intense enough to support Jump or Hop Drive (although it can support Skip Drives)." The
M-Drive "requires a Power Plant with potential equal to or greater than the M-Drive" with examples for Power Plant, Fission Plant, or AM Plant. Collectors specifically get excluded.
P. 101 starts the section on
Maneuver Drives (
M/G/Z/N). While
M-Drive do NOT have an integral power source, and thus need a Power Plant, the type of plant is not discussed.
P. 126 has performace listings for
Interstellar Drives, from Jump (1-9 x10^0 parsecs) to Eight (1-9 x10^8 parsecs). The fuel requirements are listed for
Power Plants, AM Plants, and Collectors, but not Fission.
P. 132 gives longer explanations of the Power plants. Here
Fission Power Plants are described as incapable of Overclock, and cannot support
Interstellar Drive operations. There is no mention of special treatment of Skip Drives.
P. 188 starts the section on fuel. It notes how radioactive the fuel rods are, and for the first time that I've registered it says that P-Plants start risking failure every additional week of running after 25 uses of unrefined fuel.
P. 191 has a (modified, unlabeled) reprint of
Table 13.
I think it possible the tables have an error, and the Fuel for the M-Drive for a Fission Plant is also supposed to be "Included in Operations" instead of "Not Possible"