This has the 4.2 6 cyl 258. Manual says 10/30 or 10/40. Use will be around town, some highway. Any preference on the weight of oil? Engine has 69K on it.
Is a 7 for Aluminum a real concern? That number was at 23K. The previous numbers were 4 at 17.5K, and 4 at 12.2K. Universal average is 3.
I have used 15/40 Delo400 after the initial Motorcraft oil.
Thanks, Pat