Started a LIM gasket replacement on my 1998 LeSabre. This was meant to simply be "preventive maintenance," as the car was showing no overt symptoms (e.g., loss of coolant, etc.), though it did seem to lack a bit of "pep" (compared to my wife'* 2004 LeSabre) and Scans suggested a possible vacuum leak (consistently high LTFT'*), though I could find no such leak.
Well check this out:
Note part of the old plastic gasket stuck to the head, and part stuck to the LIM.
Also check out these "plugs" left behind in the heads by the Dex-Crap:
Here is a beautiful new aluminum gasket:
Let'* see that sucker disintegrate like the crappy plastic one did.
Moral of the story: Even if you don't think
you need to replace your plastic LIM gaskets, do your engine (and your wallet) a favor and change them out!