Watch Project Farm, best product reviewer on youtube. Engine oil did the same or worse than nothing at all.
https://www.youtube.com/watch?v=lyWHF4NoNVk
Can't seem to get CRC 6026 or Flex Seal here, but Fluid Film is available on ebay.
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MY97 940 CD LPT Super Sports Edition 2 Turbo, Midnight Purple, 175,000 miles.