I wondered what type of oil i need

 

Take yer pick really,you wont go far wrong with motul 5/40 fully synthetic may be different if the cars modified.

 

Assuming Engine but I would use Silkolene Pro S 10-50 and for the gear oils I would use Millers CRX NT 75-90

 

in my classic sti i use 10w 40 mobile1 in the winter and 15w 50 mobile1 in the summer, also every change, i use prolong additive aswell and its running sweet............................................. ..................... touch wood lol

 

Mobil 1 15/50 motorsport formula in mine as said above maybe a bit thick in very cold weather.

 

Have used Motul 300V Competition 15W50 from my first service on my MY02 STi, I wouldn't use anything else.

 

Mine has just had 5W/40 Millers Fully Synthetic put in. Standard Blob WRX though.

 

agree with Rob D motul 15/50