there is a metal hose that comes out of underside of turbo that enters the engine block around the oil filter, what is it? the previous owner looks like he had sealed it with some sort of putty, while putting new head gasket on car this got loosened and started leaking oil, does anyone know what it does and would caulking fix it? thanks
740 turbo
Apr 20, 2005
2 Replies
It's the oil drain hose for the turbo, it should have a silicone O-ring to seal it into the block.
Also, you don't mention what year you have. Our '85 has a straight drain tube, but later models have a reshaped tube to allow the oil filter to be removed without swinging the PS pump out of the way. If you have to mess with the drain tube and yours is a straight variety, this might a good time to look into replacing the drain tube.
Just a thought.
Mike
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