433 votes
Nice post, been using pennzoil platinum 5w30 for a while now and after seeing your results with valvoline I'm going to give that a try. Also gonna be switching to the wix filter instead of the usual subaru black filter to see how it goes.
Valvoline all round pretty much with the wix filter, i never plan ahead enough to order the oe filter
For the Oil Filter, I would recommend using either the Mazda filter or the Wix/Napa Gold aftermarket, as they are specifically built to meet the Skyactive engine's specifications.
I use Wix oil filter with every change. Decent price and is all metal with a good filter. Does the job and has never failed on me.
Wanna see what a Wix filter looks like after less than 10k and 1 year of driving. Notice how the paper media pulled away from the rubber support. Notice that the filter has been sucked in.
For the filter, the OEM is good quality and relatively low price. If you go aftermarket, the Wix filter (also sold as NapaGold) is one of the only ones specifically designed to meet the skyactive specs.
Stick with a Bosch or a Wix and your car will last forever: this is very important now that oil change intervals have gotten much longer.
Mobile1 extended performance, Wix XP filters.
Wix has been one of the best I have seen in past years by cutting filters apart. Their pleating is most uniform and abundant plus other internal pieces such as springs, check valves, and relief valves are much high quality.
I only use WIX filters on my 04XT. They’re about the only ones that have the correct bypass pressure rating off the Amazon “shelf,” and their build quality is top-notch. I pay attention to things like this because I have an older turbocharged model with performance upgrades- she’s a bit picky haha.
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