2.0 hdi engine not working for 2 years

first of all greetings to all again
I have a 2005 model 407 premium 2.0 automatic. Because I went abroad because of my work, I am not very interested in my car. I have been abroad for about two years.
But this time I have not been coming for 1 year, but I have used the vehicle for 2-3 hours at most. Is there any problem since the vehicle is not used and it is not working and waiting on the engine and any other parts?

The first time I came and went, I did not think about selling, but when I think about selling now, the vehicle is not being sold.

tires may lose their properties / drain oil and water, nothing happens even after putting them in the closed garage

I just removed the battery terminals and the oil has stopped until this time.

When my friend went to the military, he did so, nothing happened after the car was closed, it would be good to drain oil and water, but if it does not come to you, even if it comes, change the oil especially when you start using tools.

My house's garage is not closed, because the vehicle stops outside, it takes a lot of dust and soil.

I do not know the timing of the timing, they say it has a life of 5 years, but I think if the car is staying outside, the rain snow will deteriorate where it stops, there is a neighbor in our apartment. By the way, I noticed that you have to introduce yourself, nobody answers for him

drain the oil and water. remove the top cover housing and pour the new oil over the entire engine. Before starting the starter, turn the ignition off when the lights go out and press the tongs for a few more times. You will need to bring a master to the garage for 30 minutes. will do it too.