Nitro
BVM .91 Viojet takes nothing other than Wildcat 10% D/F fuel.
I used it in my BVM 91 and had no problems with it.
Im assuming you could use the same fuel for your other D/F jets.
I installed a BVM .96 with the VioFan system in my F-86. And use wildcat 10% and it runs great. Flies excellent to, i'll be out at the park this weekend ( Afternoon) loging in more flights if your interested.