How do I know if my 2003 JDM 6speed manual has a limited slip differential? I plan to change the diff oil but am unsure what to put in it as I dont know if it is a lsd? yep I know I must be rather slow but. The car handbook is in Japanese so the section that lists oils and capacities is a little hard to decipher however, I reckon it states to use 'API:GL-5,SAE:80W-90' oil. Is this for a lsd or not? I dont want to put the wrong grade of oil in but cant be sure if its ever been changed in 47000