I was about make the same topic, today while visit summit racing in Arlington Tx.
Was going to said its feel and look exactly like PG ( Autozone STP XL ), but its not the same rating 98% at 25.
For the real world, how much is really different between 99% @ 20u VS 99% @ 30u .
Should I loose sleep over it ?
I keep told myself I won’t go down to this rabbit holes , but here I am asking question..
Replace a new Carquest alternator , after turn on its run at 14.95 to 15.00V , after let it run its steady at 14.50v.
This is my second Carquest alternator, very good.
Even rev it up 2k , no light on and my volt meter still show at 14.50V .