2020 @ 147K miles:
2015 @ 102K miles:
Between 102k-147k, oil and filter were changed every 4-5K using Mobil 1 EP, Amsoil XL or Idemitsu branded synthetic oils except for the current fill, which has been Valvoline Premium Blue Restore. Except for the current fill, the oil and filter were always replaced between 4-5K miles and the oil was topped off whenever it was low; this usually resulted in 1.5-2 qt of top-off between each oil change.
Prior to 102K I think the vehicle received conventional oil by the MM or at 5K intervals.
Based on the pictures I am not seeing any significant reductions in varnish as a result of using synthetic oil.
2015 @ 102K miles:
Between 102k-147k, oil and filter were changed every 4-5K using Mobil 1 EP, Amsoil XL or Idemitsu branded synthetic oils except for the current fill, which has been Valvoline Premium Blue Restore. Except for the current fill, the oil and filter were always replaced between 4-5K miles and the oil was topped off whenever it was low; this usually resulted in 1.5-2 qt of top-off between each oil change.
Prior to 102K I think the vehicle received conventional oil by the MM or at 5K intervals.
Based on the pictures I am not seeing any significant reductions in varnish as a result of using synthetic oil.
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