Oil filter AMSOIL or Hengst

I was skeptical, but I started using it and their best filter in my '98 Durango 5.9 (gas). I ran it for the full 25 K(+) and sent an oil sample out to a 3rd party "Analysts, Inc." for a full analysis - including spectrographic. Basically, their recommendation was that the oil showed minimal contamination, acceptable viscosity, and was still OK for continued use and to re-sample at next interval.

I use amsoil, pricy but the filter is what's really worth it and before I changed my valve seals I burnt quite a bit less, it went from a quart every 800-1k miles to a quarter quart in that same time frame.

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.

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).

I recently switched to Amsoil using a Mann filter. It runs great.

Oil service has been done every 5K since then using Liqui Moly Molygen Full Synthetic 5W-40 and Hengst filters.

I have used the Amsoil Premium diesel oil and filters for the last decade, changing them once a year, and my truck is doing just fine.

I use amsoil oil and amsoil filter

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.