Technical solution for oven guide lubrication: Expert advice needed

I need to grease the guides in the oven again, originally there was some white grease. I was looking for groceries, but up to 300 degrees I couldn't find anything. I used the usual kind of up to 800, but after heating it smells terribly, I washed it with a remover and I do not know what it can be lubricated with. I am asking for help if someone has experience or knows what grease it can be lubricated with.

Naskosil - up to 230 ° C, PZH certificate no. W / 93/95 and H / 14790/99. Application include in the food industry, even when in contact with tap water.

Plastilube - up to approx. 1000 ° C, brake grease, food approval is not available, but it should not cause problems (smell) at temperatures up to 300 ° C.

I ordered Molykote P1900 (cream form) and lubricated the guides.
Then I heated the oven to 280 degrees Celsius.
Unfortunately, the evaporation of the liquid content of the lubricant produces acrid vapors. After this operation, a white bloom remains on the guides. After evaporation, the guides squeak a little.

To sum up - it is not suitable for guides with ball bearing.
It turns out to be an anti-seize agent (it prevents the components from sticking).

After contacting the lubricant distributor, I ordered Molykote 41 .
The attempt to obtain information on the Amica website was unsuccessful - the more it encouraged me to search.

Molykote 41 is a black paste - probably graphite based on synthetic oil. Unfortunately, the manufacturer appreciates this solution, so it is significantly more expensive - about PLN 100 for a 100 g tube (capacity comparable to a tube of toothpaste).
Heating in 280 degrees Celsius also causes acrid vapors - there is probably no other option. It is worth lubricating with great sensitivity, i.e. the less the faster it evaporates, but without excessive minimalism.
In any case, the Molykoe 41 has brought the expected effect - the guides glide freely.

In the meantime, I received a suggestion to leave the guides unlubricated. You can and yes - they don't move so freely, but there is no tragedy (at least in my case).