How to remove oil traces from wood ?

Baking soda.
Cover stained area with baking soda overnight.
Sweep up in the morning.

If it’s ingrained, might try brown paper and a warm (not hot !) iron.
Pre-heat iron; place brown paper over the top.
Use heat from iron directly on to paper and see if stain will lift.

Not sure that it can happen actually, especially once it's saturated / permeated.

On the plus side, moisturized floors last longer :)

If you have Dawn detergent available, that will work. It might take a couple of times. Mix Dawn with a little water and with a rag or brush, clean it. It’s an excellent degreaser. 😊

kitchen towels =say 5 one on top of each other
warm iron the papers on top of the stains

Vinegar might work.

Circular saw

Surprisingly enough, mayonnaise can take water marks away. Doesn’t always work.

i believe u can use lacker thinner. but it will remove paint and anything there.

Sandpaper and revarnish/whatever was on there?

Use your dry skin to soak it up? ;)

Stop using it