if this is for a bearing not just some random moving part u have another issue. Suddenly BW's recommendation is about what I also vote for.
You need something that doesn't just drip out. Your main problem is that it needs a fairly high viscosity at high temp. If this weren't a 'food grade' request, gear oil type things would be great.
While I loved mineral oil before, you have to scratch things of that nature if you are trying to ghetto "repack" a bearing here. Bearings don't really need to be lubed for low levels of friction, but rather to prevent mechanical damage from friction over time. The "balls" or the rollers inside a bearing already ensure that friction is kinetic friction not static. Thats why bearings gone dry work just as well, but die really fast.