Season/Oil/Wd-40 the outside of the YS 640?

Hi,
Sorry if this has been asked before, but I cannot find the question/answer.
I have a YS640...love it!!
Just wondered...do I have to oil the outside chasis/cover etc with to keep it from rusting? I notice a lot of videos on youtube and a few folks have rust on the outer shell of their ys640. My model was built in April of 2017 I believe. I am at work right now so cannot look at it.
Is it a good practice to season/oil the outside of the cooker?
Sorry again for the dumb question
Sorry if this has been asked before, but I cannot find the question/answer.
I have a YS640...love it!!
Just wondered...do I have to oil the outside chasis/cover etc with to keep it from rusting? I notice a lot of videos on youtube and a few folks have rust on the outer shell of their ys640. My model was built in April of 2017 I believe. I am at work right now so cannot look at it.
Is it a good practice to season/oil the outside of the cooker?
Sorry again for the dumb question
