I should also mention, while at Walmart there was 2 other motorcycle specific choices available.
- Valvoline (full syn) 20w-50 $9.97/qt
- Castrol Actevo (syn blend) 20w-50 $6.47/qt
Both of these had an API rating of SL, while the Mobil 1 had an SJ rating, $10.86/qt
Any idea as to why the...