Oil filter Hengst or STP
I have several VAG cars and perform changes at 5k, Liquimoly kits from FCP Euro, always use a quality OE filter such as Hengst, save your records and any reasonable buyer will understand.
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.
just use pennzoil platinum or valvoline advanced 0w-20 from walmart and an STP 10992XL filter from autozone.
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).
Oil service has been done every 5K since then using Liqui Moly Molygen Full Synthetic 5W-40 and Hengst filters.
My E550 gets M1 0W40 every 5k, with a new fleece Hengst filter. I don't drive it hard until I see past 80C on the water temp (I don't have an oil temp gauge- only the E63s do). Basically the same procedure I use on my S54 BMWs, and every performance car I've ever owned
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.
since vw started using the synthetic material i am very fond of using oem. ive never seen the synthetic material deteriorate or crush in the housing between oil changes. ive also seen the plastic on those types of hengst filters break apart and that scares me to use.
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