This is the filter to my last UOA in the wife's SAAB 900 NG v6. Engine is the b258i alias Opel/Vauxhall C25XE, the small version of the GM 54° v6. Oil used was Mobil1 FS 0w-40.
This was intended to be a short interval, but somehow life got in the way. So the filter stayed on for nearly 15 months and 18576km.
The filter is in construction very similar to the Saab/GM longlife filter 55560202 for the Saab H-engines, but it misses both ADV and bypass valve.
The filters were part of a small stash that came with the car when I bought it. I won't be surprised if they are 20 years old (SAAB-branded filters have not been sold for ages, they were all labeled GM...), but they seem to be holding up fine.
The M1 does seem to do a very good job at cleaning - oil consumption was reduced, fuel efficiency improved a bit and the engine feels much more responsive to throttle input. So I assume that the piston rings are much better now.
There were a few spots of dirt in the can, and a few places were the filter media was filled with dirt. The stuff in the filter is soft to the touch and disintegrates under pressure; if you run it between your fingertips it is smooth. Reminds me of graphite, very similar to the stuff you get when sharpening a 6B pencil.
UOA: https://www.bobistheoilguy.com/foru...40-fs-18576km-in-saab-b258-opel-c25xe.332312/
Blog (german): https://turboseize.wordpress.com/2020/09/30/oelfilter-fuer-den-v6-saab-m94v6-4502696-nach-18576km/
This was intended to be a short interval, but somehow life got in the way. So the filter stayed on for nearly 15 months and 18576km.
The filter is in construction very similar to the Saab/GM longlife filter 55560202 for the Saab H-engines, but it misses both ADV and bypass valve.
The filters were part of a small stash that came with the car when I bought it. I won't be surprised if they are 20 years old (SAAB-branded filters have not been sold for ages, they were all labeled GM...), but they seem to be holding up fine.
The M1 does seem to do a very good job at cleaning - oil consumption was reduced, fuel efficiency improved a bit and the engine feels much more responsive to throttle input. So I assume that the piston rings are much better now.
There were a few spots of dirt in the can, and a few places were the filter media was filled with dirt. The stuff in the filter is soft to the touch and disintegrates under pressure; if you run it between your fingertips it is smooth. Reminds me of graphite, very similar to the stuff you get when sharpening a 6B pencil.
UOA: https://www.bobistheoilguy.com/foru...40-fs-18576km-in-saab-b258-opel-c25xe.332312/
Blog (german): https://turboseize.wordpress.com/2020/09/30/oelfilter-fuer-den-v6-saab-m94v6-4502696-nach-18576km/
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