Quote:
Originally Posted by DarkPira7e
Well, to be frank, adding a turbo does not change the clearances in the block or other things they may have fine tuned with our unique high compression fa20 block. Could really just be because Toyota had a say and wanted better emissions, it's likely something far less worth our speculation than we could imagine. As I had said, the FA20 was far different than the EJ motors and maybe they just decided to try a light oil
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The FA20DIT in the Forester XT and WRX and the EJ in the STI run 5w30. The newer (?) fb20dit (?) runs 5w30. Every NA engine in their current lineup like the Crosstrek, Imprezza, etc including the BRZ run 0w20.