1/2" inside diameter is a sufficient oil drain line. I don't know if your hose is 5/8" inside diameter but 1/2" is way big enough. With 5/8" hose your outside diameter is 7/8" or more with the braiding, probably closer to 1" OD.
Its no wonder it will hit everything from the turbo to the pan. 1/2" hose will still be almost 3/4" OD but fit much better between stuff.

That is the reason I made my drain from copper tubing and elbows, so that it had an OD of about 9/16" and wouldn't burn through at all. IN fact, that copper drain I made in 2003 is still good. Beat that suckas!


Former owner of '99 CSVT - Silver #222/2760 356/334 wHP/TQ at 10psi on pump gas! See My Mods '05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red '06 Mazda5 Touring, 5spd,MTX, Black