3300-3500. Mobil 1 for the first 180k, than switched to Castrol Edge. Did some analysis 60,000 miles ago and Blackstone came back saying the wear was below average. They thought I could go longer, but if it ain't broke, don't fix it. Was running Cobb stage 1 since 50K?, then at 180K had to replace the turbo (stuck wastegate) and went with BNR 16G @ 18.5 psi, tuned by Shamar.