Questions about oil change parts and fluids.

I am goign to be changing my oil this weekend and I thought I would ask some questions before I did it. I don't like takign the car to the dealer if it is somehting I can do myself.

I saw some of the other posts on here about the normal Mazda3 2.3L but I am not sure if the same goes for the MazdaSpeed 3 as well.

Here are my questions:

- What type of oil does Mazda use? What do they put in the car from the factory?
- What type of oil filter do they use? (Brand)
- What size oil filter will work (After market)?
- What is the part number for the crush washer?

Last but not least I havce heard some mixed opinions about using synthetic oil on the turbo version due to blowby of oil into the intercooler? Anybody have anyhting to add on that? I think I will just use what the dealership would use but I need to know what that is.

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