AeroShell Oil Sport Plus 4 Aviation Engine Oil - 12 x 1 Quart Case - Premium Aircraft Lubricant for Small Piston Engines & Aviation Maintenance

I scored a case for $150 shipped in year 2024 - that's 2020 prices, my friends. Keep an eye on the price fluctiation, but this is the only stuff I put in my Rotax 912ULS. Oil viscosity after 50hrs of use is still in spec per Blackstone lab. What else to not like?