Hi,
This is the High Mileage Product Data Sheet From the Mobil 1 website.
Highlights:
- 5w-30, 10w-10 are SL
- Only the 10w-40 is currently SN
- Extra anti-wear additive. Helps to protect critical engine parts in higher mileage engines
- Extra cleaning additive. Helps to reduce the sludge and deposits that conventional oils can leave behind
- Seal Conditioner. Helps to prevent leaks