Looking to change some trans fluid in a 2012 Tahoe. Have a couple quarts of Valvoline Dexron VI on hand so I went to the local Advance Auto to pick up some more. The 4 qt jugs of the Valvoline fluid they have, p/n 883572, says Dexron VI and Mercron LV on the label. Is this the right fluid? The Valvoline quarts I have just say Dexron VI on them and I want to make sure the stuff at the store is the proper spec and not some 'all makes all models' type. Thanks