Blackstone tells me the oil is doing well at 7500 milesabscate wrote: 25 Nov 2018, 09:32 7500 mile oil change on the 2005, now at 120,000 miles
Mobil 1 synthetic.
Sending a sample to Blackstone for analysis.
TBN 2.8 (>1.0 is spec)
Fuel <0.5% (2%spec)
Coolant 0%
Viscosity right in middle of range
All metals well below contamination spec






