gentlemen, and ladies... As im new here id like to contribute to the silvia forum by offering the original nissan service manual (e-manual) to our s15 silvia members. It contains the recommended feactory service intervals, so u can print and follow, as well as lubricant info etc etc. Its a good guide to ensure your mechanic is doing the correct thing. Kindly post ur emails . Ill rar it and send them to u guys as soon as possible. File size about 28mb (before compressed).