Re: Oil in the air filter???
FWIW, I had an old Tecumseh HH60 that would literally pour oil out of the air filter. I replaced the breather (reed I think), and totally cured the problem.
That said, if it ain't broke, don't fix it. But even if it does get worse, don't jump to the conclusion that the engine is toast.
Good luck, keep us posted.
2005 Craftsman GS6500 (2010 Kohler Courage): JB Jr, electric sleeve hitch
2003 Husqvarna GTH2548 (2014 Briggs Intek): Craftsman 46-inch snowblower
OTHER (NOTABLE) EQUIPMENT:
2013 Honda HS1332TAS tracked snowblower
American CLS 40TC24-200 Logsplitter (2019 Predator 301)
1997 Troy Bilt Horse PTO: tiller, chipper/shredder
Stihl Kombi KM130R: string trimmer, mini cultivator, bed edger, pole saw
Echo PB751T backpack blower
Husqvarna 350 chainsaw
2003 Craftsman GT5000 (all used up)
2003 Craftsman DLT3000 (all burned up)