Essentially zero, as Walmart had them destroyed or sent to a liquidator. You will see Wix's date code format on top of the can, white lettering that can be hard to see. The baseplate will also be a Wix baseplate.
Cheap Wixes are the best economy-tier filters to buy. Walmart's ST, Napa's Proselect and Silver, O'R Microgard, Parts Master, and some others.
Originally Posted By: crazyoildude
Wix is not the same filter it was a few years back.
Wrong! Wix filters are still the same as they were pre-takeover. My 57356 made in April 2016 still has round holes.
Originally Posted By: cmlind
The Pro-tech line has changed with some combo bypass/drainback valves.
also not due to the Purolator takeover. The combo valve pre-dates the Purolator buyout.
Originally Posted By: BigD1
You could also stop by NAPA, and just buy a NAPA ProSelect. NAPA has 10% off all the time, and you can reserve it at store, and the price will be very close to Walmart SuperTech. For example, with the 10% discount NAPA ProSeclect will cost me $2.96 before tax for my Olds.
When on sale, Napa's PS and Silver filters are often cheaper than Walmart's prices. Also, the cheap Napas are available in almost every Wix application/part number, whereas Walmart's line is consolidated. For example, Napa has the 2- and 31315 (equivalent to Fram's 8316), but at Walmart you have to get the ST3600 (Wix/Napa -1516). Napa also has separate 7356 and 1334 (WM consolidates to the ST9688, which corresponds to Wix's 1334)
However, if you want one of the Napa filters that WM doesn't sell, those do cost quite a bit more. For example, the Napa 21315 and 31315 are about $5 each. Even when on sale, they're well over $3.