I had a 2003 and 2005 that did not have it either. Not sure which years had it but FL dealer told me about it when we were talking about a fuel problem. He looked up my vin# to make sure I didn't have it I didn't. Yesterday I asked him about the Berk and that's when he told me about 2013. I would be interested if anyone does have it and on what.
I don't change my own oil because I'm always in a campground and it's just to much to deal with. I would think that pump would work great for DEF as well as oil Rich. If you use it for DEF make sure you flush it with lots of water.
I have a couple of these pumps one I use for DEF the other for pumping diesel out of Jerry cans (NEVER MIX). My concern with using it for oil would be the viscosity of oil is thick would this little pump move the oil?
I have purchased these at both Home Depot and Lowe's.
I have three of these pumps. I do use one for DEF and I do flush it with distilled water. I also was afraid of the buildup of the dried DEF ruining the pump. I will try the pump with Rotella and let you guys know how it works.