Fucking Guess Again
CDR Sal details the fail
Read the whole thing; the short version is, that it leaked seawater into the lube oil system. And we are to believe the snipes that that was a really cool thing and hey, lets keep running eh?

The really amusing bit is where 'Lazarus' still persists in his empty-headed monomaniacal defence of the shitbox. And while that was going on.... ANOTHER LCS, of the 'even' class-type (which was "just in Hawaii getting its Harpoons fitted!" ....) No no NO..... suffered a breakdown of the combining system . Hmm . Same system, different unit. Built in completely different yard. I donno, but never been big on coincidence. There's that pesky design flaw no one wanted to believe, eh?
And if that is the Shot, here is the Chaser:
“Coronado is operating under its own power and is being escorted by USNS Henry J. Kaiser.”
That's an Oiler, BTW

It writes itself