turbo oil drain line size

01-23-2008, 10:16 AM

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turbo oil drain line size

Hi what size turbo drain line to use on a ls1 twin turbo set up?Gravity drain,-10 -12??Thanks Dan

01-23-2008, 11:19 AM

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10 good
12 better

i ran a 10 cause it was easier to hook up my fitting to off the turbo,.

01-23-2008, 11:19 AM

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I'd recommend either of those sizes, -10 or even -12 if you can fit it. I use a -12 on my single setup.

01-23-2008, 01:13 PM

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i use a -12 for the drain..