Install a street elbow with a short nipple & overfill it with kerosene,then drive around for a few miles,then drain it out.Repeat this process several times.
I'd would worry about the kerosene leaking onto the wheel bearings and brakes past worn axle seals.
Maybe just drain and fill with the same amount of kerosene and let it idle in third on two jack stands. This should purge all the sludge.
I'm not smart but I worry about all the junk sleeping peacefully in the nooks and crannies. For my 2 with goop inside I drained them and flushed them with 85wt about 3 times and drove on.