Yes,i also found this to be the case sometime back with the 5-30 MC it just vanished and was replaced with 5-20 witch i used for my last oc in the GMQ but i am not happy with the 5-20 i never had to top up with the 5-30 but last week 3k into my 5k oci had to add a qt i know this isn't a big deal but it just bugs me for some reason so possibly will venture from MC completely and go back to Pennzoil Conventional 5w30,Quaker State Conventional,or maybe Valvo.wb used to use and liked Valvo. will be dino regardless of brand and my MC filter of course.