More exposition:

When the ganeral public either cant afford a new car, cant even get ahold of a new car, or is looking down the barrel of economic doom (rising interest, rising rates, possibility of job losses) then they keep their existing cars longer. It worth noting the median age of the American car is in excess of 12 years now and continues to stretch further.

As such, AZO does their very best sales when the economy is either unstable or in a downturn. Every time the US goes into recession, their sales peak.

And by all accounts, we are expecting a pretty hard economic downturn in the next calendar year.