Classic Audi Questions

No, not classic questions about Audi, like why is my check engine light on, but questions about classic Audis.

We were up in da UP for LSPR and were checking out some cars during the show. When looking at the Audi Quattro, we noticed a couple of interesting things that we couldn’t figure out.

What is this part on top of the exhaust manifold that has what I assume to be oil lines on it?


Also, what does the heat exchanger beneath the spoiler cool on the race car?

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