great work it may have been, but the line is leaking again. i think leathermang was right that there's a support bracket missing. i have never seen an original 85 CA install from below, and of course i have deleted the trap ox, but the test pipe did come with a small 90 degree tab on it, never attached to anything - which i removed to access the bolt behind it. nonetheless, i can see how to easily make a small bracket to support the underside of the turbo assembly, and fix this hard line again.

but: the turbo is solidly on the motor, nothing loose. i understand that the turbo oil inlet pipe is restrictive so that the much wider drain pipe contains mostly air at a very low pressure. what about cutting the federal drain pipe for its flange and hose clamping a mostly vertical length of very high-temp, oil-rated hose instead? that way the weight of the turbo would have nothing to break. i haven't measured the temperature of the oil drain after a hard run yet. perhaps no such hose exists.

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'77 240D, 504H, OM617.952, etc.