Here’s an SDF 42 AMSOIL filter that I used as a flush filter. Got it super cheap. I used it on a 2004 Jeep Wrangler with the 4.0 engine as a flush filter. The oil in the jeep had 5000 miles on it. Total mileage on a jeep was 140,000 miles. Don’t know what was used prior to all that. This was on a friend’s jeep. I put the SDF 42 on added a can of AMSOIL engine flush and ran ant idle for 20 minutes.
