I used to use Bosch before I went synthetic, now I use Amsoil with a Mobil 1 filter, 10k between changes.
before you go tearing down your engine, go buy a mann filter (has a check valve in it) from a vw parts plce and have your oil changed with detergent oil, i had a bit of carbon build up, did this and solved all my problems.
Filters: OEM Mann/Mahle/Hengst only Oil: 15w40 winter, 20w50 winter I've never had to replace an oil pump or cam followers(\"lifters\") on any of my cars. VW engines, especially higher-mileage ones, love thicker oil.
Ditto on Amsoil, I go 8k between changes and use a Mobil 1 filter.
I always use stock VW/Mann oil filters. I think next oil change I'll go with Mobil1 0W-40 instead of Royal Purple 5W-30 and I'll change the oil at 10,000 miles instead of the usual 7,500 with RP.
I'm hoping that getting some MANN filters for the upcoming oil change will help solve MY problem...I'm frankly getting tired of dealing with this
Replace oil filter with new filter preferably Mann.
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