Here is my Blackstone Labs analysis. The oil was used for 3.5 months and 3770 miles. From 70K-108K miles I only used Mobil 1 5w-30 year round. I heard stories and decided to switch to Rotella T 5w-40 and this is the report from that oil. The oil filter is the new OEM Subaru blue style made by Honeywell in Canada. The air filter is OEM and was last changed around 80K. Driving consisted of about 50/50 highway and stop and go city driving. I took a 1000 mile roadtrip, but sat in traffic for about 2.5 hours so I figured it averaged out. The car has a turbo back 3" exhaust and the computer is tuned to Cobb Tuning's stage 2. I am concerned about the high lead content comments.