BREAKING: GM is officially recalling the L87

[viven44]

Oh, my gosh! So much miss information and speculation so fast.

You mean insipid ramblings and gossip? part and parcel of online forums

 

[GMCChevy]

They've said before thst thicker oil causes issues with the AFM lifters so I wonder if this change might cause shift to more issues with that.
While 20 weight is thin oil a lot of vehicles have been using it for 25 years or more without these major issues so it seems more like a bandaid on GMs part to try to prolong the real issue of defective parts or whatever is really going on.