shell Rotella T triple protection 15w-40 vs..........

I was looking at this at Walmart today. 12.87 for a jug. I know many of you use this in the ole' flat tappet cams. I've been using 10w-30 Quaker State Defy (a little more zinc and a dab of synth. blend) with zinc additive Maxx ZDDP. Zero complaints! However, this is about 24 bucks for the QS jug and additive. Just having my thoughts wonder look'n at the Rotella T triple protection Diesel oil..... 12 and change..... and the convenience of not ordering Maxx ZDDP.

I have one Duster on VR-1 10w-30.... but that's a little over 30 bucks...
Not trying to be stingy, just think'n out loud..... :rolleyes: