Well, I went ahead and did it by myself

(almost, I saw how it`s done

)
First of all, we need to know which oil type we need for the car. According to the owner`s manual, 7AFE uses:
- SAE 75W90
- API GL-4 or GL-5
- Around 2.7 quarts
So, I went to my racing car shop and bought the oil. I went to "Valverde Racing" in Costa Rica and a racing driver (Roy Valverde) recommended me the oil.
I took Red Line SuperLight ShockProof Geal oil 70W90. He told me that is a great oil for daily/occasionally races. I bought 3/4 qt`s.
With this done, I just needed to replace the oil. Since I was not sure how to do it, I just went to my nearest workshop. I advised them I did not know how to do it and without hesitation they showed me how to.
The main product:
All you need to do ”s unscrew this screw and verify the oil level/ oil quality. Also this is the screw where you put the new oil:
Then, just remove this screw and let the old oil drains out:
Make sure the old oil is completely drained. Now, put the screw back in and Voalį! Use a funner with a hose and add the new oil. (Put the other screw when finished)
So simple, at least you now know how to do it.
PURA VIDA!!