Latest would be last Fall. That big old Generac 5500 Chonda had its Valvoline VR1 10W30 Synthetic dumped after 10+ years (!) and some Valvoline 5W40 Euro that had on clearance at WM.
Before you go freaky - There was likely no more than 20 hours runtime on that 10 year old oil. It even had an ounce of LubriMOly MoS2 in it. Thinking is: No Filter = No Problem with the moly sludge and particulate can only help on a dipper and splash engine.
Before you go freaky - There was likely no more than 20 hours runtime on that 10 year old oil. It even had an ounce of LubriMOly MoS2 in it. Thinking is: No Filter = No Problem with the moly sludge and particulate can only help on a dipper and splash engine.