I have about 40 $1/q Havoline DS 5w-20 and will continue to use it. After trying PZ, that's what I am most likely to spend money on. Havoline DS only gets knocked off the radar due to price when people pick up a bunch of random closeout $.01c to $1 conventional or synthetic blend oil. Another nail in the DS coffin was all the BOGO and Freebate PP and SP. I suspect we will see a lot of interest in Kendall, going forward.