Oil filter LIQUI MOLY or Hengst

First of all, change the brand of the oil filter and do the same test again. My recommendation is Hengst filters, same quality with Mann and Bosch, made in the same factory in Slovakia.

I change my oil filter every oil change n my advanced synthetic oil liqui moly last 9K

I have had good results with the Hengst. Recently ran a Hengst to 20,000 miles. It’s was a bit crispy but was doing just fine.

I used Liquimoly 5w-30 when I was NA, and still use liquimoly 5w-50 since boost. A little pricey ($120) for 10qts but worth it. Oil filter, just a ford performance filter. Pretty much any auto store will have them or a comparable brand in stock. When I was NA I’d do oil changes every 3k miles or sooner depending on how hard I drove it. Now with boost the max I go is 2k miles. Normally 1k-1.5k since I drive it hard and run e85.

I have religiously changed the oil and oil filter every 5k miles with Liqui Moly TopTec 4200 (with VW spec).

I was using Kirkland synthetic before for topping off and other American oils for oil changes I’m sure, but then I went to a euro auto shop and they switched out for a German filter and oil, LIQUI MOLY, and I got a significant increase in mileage.

It’s easy peasy to DIY at every OCI (5k mi or 6 mos whichever comes first, 2014 Mazda6 Touring 6MT). Been doing it, for decades (various makes; at times with an oil boy vacuum fluid extractor). Will be changing mine tomorrow. This time, will try Kirkland 0W20, with a German Hengst oil filter (identical dimensions/specs Made in Japan OEM Mazda PE01-14-302) plus Lubro Moly MoS2 (molybdenum).

Honda OEM filter (Honda used Tokyo Roki oil filters for my bike ????) I used to buy Motul 7100 4T, however the price on that recently SKYROCKETED… it’s almost 80$cad before taxes for 4L (60$ for 1.05669Gal for you freedom folks).I refuse to pay that much for oil, so I now I buy Liqui-Moly Street 4T. And that’s basically the same price that the Motul USED to cost. 50$ (35 eagles, or whatever) I am aware that Motul 7100 has esters added to it, which Liqui-Moly Street does not, and that technically Motul 7100 is a better oil. But it’s not double the price better… I was willing to pay 60$cad, but not 80$cad lol.If I can find Bel-Ray EXP (another ester blend) at the shop, I’ll buy that too :P but Liqui-Moly seems to be much easier to find.

Official VW filters are Hengst's with a little VW logo and part number printed on the end just note that the filters do not include the gasket for the oil-can drain plug (dunno if that's on the mkIII's, but it's on the mkIV's). Just means you can't really drain the can, just unscrew it and be quick to minimize the amount of oil that goes flying

I've just experienced this same problem with my 2017 Buick. I have the UFI cap and the dealers used the Hengst filter 7 of the 9 times I had it changed at the dealer. Using a Hengst filter in the UFI cap results in the oil bypassing the oil filter all the time. The UFI cap expects the bypass valve to be on the filter and the Hengst filter just has an open hole there resulting in the car being run for about 50,000 of its 70,000 mile life WITHOUT an oil filter.