Cheap alternative to pricey flat tappet oil in street cars...

Hey Dave just now found this thread. I also was somewhat worried about this when I realized my Jeep 4.0L had a flat-tappet cam but if you look at the stock cam and valvespring specs for those years ('91-96) they are SUPER lazy, as in very slow ramps and soft springs. My 4.0 recently started smoking and I'm about 75% sure the rings are going. I'm gonna start drawing up plans for a stroker build and I want to use an aftermarket cam with more lift/spring; THOSE definitely need sufficient zinc in the oil.

FWIW I've always run Valvoline "synthetic" oil with no additives and I've put 45,000 very hard miles on top of the 180,000 it already had and I never had any indication of valvetrain problems. Just these damn rings lol...