Yeah that line sucks! I had a problem with all the turbos I've swapped. I lost one of those weak little pinch clips and never replaced it, but I never had a leak. Cory told me that, that line doesn't really see a "flow" of oil its a severe drip at best, so as long at the line is far enough up on the turbo and the connection to the block is tight it shouldn't leak.
If you want to swap the turbo I won't hurt. Idk if the TD04's fail as often as the VF39's but if the turbo has to come out why not replace it, especially if you have one ready to go in. Plus, your turbo could be losing its seals and blowing a little oil and or coolant into the downpipe and causing it to smoke.
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