Does anyone have information on the drain interval for these oils?
Any weight of their oils.
I can not find that information anywhere.
In my non scientific opinion, I am thinking 7500 to 10,000 miles.
97 Mercury Gran Marquis GS
4.6L V-8 250K
Castrol FS Edge or Castrol FS HM 5W or 10W 30
Kendall Semi-Synthetic 5W-20,5W-30 or 10W-30
WIX Oil 51372 or K&N HP 2010 Oil Filter