Apparently, the engine compartment and trunk of my car have been treated with Cosmoline, a rust treatment from the 70's. (Thanks to John_in_Va for naming the culprit.) As a result the whole engine compartment and much of the trunk have yellowed horribly. Attached is an image where you can see: 1.
Klean Strip Prep-All
How to remove Cosmoline. Quickly. Easily.
Cosmoline Removal From Painted Surfaces?!? - BMW Discussion - WI BIMMERS - Wisconsin's BMW Community
Best stuff to remove Cosmoline off your engine (for those that still have it) : r/E30
Yellowing Clearcoat : r/Autobody
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Started to wrinkle when I applied the clear coat : r/Spraypaint
Cosmoline Paper - VCI Wrap for All Metals - In Stock
Cosmoline/yellowing clear coat removal - Page 2
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Cosmoline - Industrial Grade Long-Term Rust Preventive
How to remove Cosmoline. Quickly. Easily.
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