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John V · 12-03-2021, 09:17 AM

Your LR4 likely calls for the 20 weight oil because of fuel economy, not for any reason relating to engine protection. It will be fine with the 30 weight in there.

12-03-2021, 09:17 AM	#14
John V No more BMWs Join Date: Apr 2005 Carmudgeonly Ride: Ram, MS3, CX-5, RX-8 Location: Glenwood, MD Posts: 14,753	Your LR4 likely calls for the 20 weight oil because of fuel economy, not for any reason relating to engine protection. It will be fine with the 30 weight in there.