I saw this mentioned somewhere several weeks ago. I used my driving data and maintenance records and projected mileage forward two years for each vehicle and bought the amount of oil I would need to service each vehicle for two years of driving at current monthly mileage rates. I already had transmission fluid for all of them and serviced differentials (usually something you do above 100000 miles) so I won't need other oil products for a while. Good luck y'all.

Now I wait for the inevitable switch to EVs to create discounts on ICE vehicles as people finally get the message that EV is the future. I will buy the pickup I need at a discount to today's prices as that shift gets going.