This is a Bosch Workshop filter, 72066 for a white block Volvo engine. It was in a 2004 Volvo S60 2.5 turbo for 13 months and 8,500 miles, with Mobil 1 10w-30 HM and 10 ounces of Lubegard Biotech additive.
Looks like the filter did it's job, but not with ease. I definitely did NOT intend to leave this filter in this car for this many miles. I don't even know why I HAD this filter as it's not something I would normally use. I believe my intention was to pull it after 3k miles and put in an OE Mahle for the remainder of the intended 7,500mi OCI. I was expecting possibly just this scenario. My step-son drives car, we don't live together, and his usage profile changed dramatically 1/2 way through the period. I forgot he was putting a lot of miles daily on the car suddenly, and that I was supposed to check and change the filter mid way. Oops.
The filter did it's job and captured A LOT of carbon. I attribute this to the Lubegard additive - I intended it to clean up some past neglect I strongly suspected. The car had only moved 6,500 miles in the prior four years (2016 to 2020). I emptied out the dealer Castrol 5w-30 Full Syn and Mahle filter from 2016 last 10/2020, when we bought the car. The old oil and filter looked fine at that time, but I suspected the engine had some oil neglect in the past. All of this carbon I attribute to the Lubegard cleaning up the engine.
The pleats were very stiff and brittle. Several broke where I merely pushed gently with a finger to open a pleat to examine the carbon - they simply snapped apart. However, no failure during use and the car's plastic filter housing with the built in by-pass valve was quite clean outside the filter.
I refilled the car with 6 qts of Mobil 1 10w30HM and 12 ounces of Lubegard Biotech, and an STP extended life filter. I'll check the filter in 3 or 4k miles to see if the Lubegard is still lifting Carbon out. The car was down about 1.5 qts after 8.5k miles, so very acceptable oil usage. When the engine gets cleaned up, I will switch to a Fram Ultra, use only 6ozs. of Biotech per OC, and then leave the Ultra in multiple OCIs.
Looks like the filter did it's job, but not with ease. I definitely did NOT intend to leave this filter in this car for this many miles. I don't even know why I HAD this filter as it's not something I would normally use. I believe my intention was to pull it after 3k miles and put in an OE Mahle for the remainder of the intended 7,500mi OCI. I was expecting possibly just this scenario. My step-son drives car, we don't live together, and his usage profile changed dramatically 1/2 way through the period. I forgot he was putting a lot of miles daily on the car suddenly, and that I was supposed to check and change the filter mid way. Oops.
The filter did it's job and captured A LOT of carbon. I attribute this to the Lubegard additive - I intended it to clean up some past neglect I strongly suspected. The car had only moved 6,500 miles in the prior four years (2016 to 2020). I emptied out the dealer Castrol 5w-30 Full Syn and Mahle filter from 2016 last 10/2020, when we bought the car. The old oil and filter looked fine at that time, but I suspected the engine had some oil neglect in the past. All of this carbon I attribute to the Lubegard cleaning up the engine.
The pleats were very stiff and brittle. Several broke where I merely pushed gently with a finger to open a pleat to examine the carbon - they simply snapped apart. However, no failure during use and the car's plastic filter housing with the built in by-pass valve was quite clean outside the filter.
I refilled the car with 6 qts of Mobil 1 10w30HM and 12 ounces of Lubegard Biotech, and an STP extended life filter. I'll check the filter in 3 or 4k miles to see if the Lubegard is still lifting Carbon out. The car was down about 1.5 qts after 8.5k miles, so very acceptable oil usage. When the engine gets cleaned up, I will switch to a Fram Ultra, use only 6ozs. of Biotech per OC, and then leave the Ultra in multiple OCIs.
Last edited: