@tom: don't know tom, they dont mention it, but as kayl said, it was -23.3c @ 270w...

anyway, i decided to make a custom oil sep rather than buy it as i dont have enough money. the Alco A-W55877 with 7/8 OD is $65 but i have unused Dry ice container with 25cm height and 2" diameter, just need to make the top lid and adding steel wol . it'll save some money. btw, do i need to Prefill the custom oil sep?