I use stainless steel pot scrubby from Walmart. I think it’s 3M brand. It is basically a continuous chip so it only has two ends. I think this is important because I don’t want that stuff breaking off and going into the intake. Super durable stuff made to be scrunched up and manhandled.

I notice some people use the copper stuff too. It seems to help coalesce the oil without having a lot of flow restriction.

Don’t use steel wool. Spring for the $2 pot scrubby.

I use this. https://www.walmart.com/ip/Scotch-Brite-Stainless-Steel-Scrubbing-Pads-3-Pack/13281617

I think I used 2. I kind of stretch them out to fluff them up so to speak.

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79 300TD “Old Smokey” AKA “The Mistake” (SOLD)
82 240D stick shift 335k miles (SOLD)
82 300SD 300k miles
85 300D Turbodiesel 170k miles
97 C280 147k miles