Correct me if I'm wrong, but I think moly improves lubricity and would help with flat tappet and cam.
Valvoline Maxlife Full Syn's ZDDP has a high level of moly, and it's a very good type of moly.
Valvoline Extended Protection Full Syn (VEPFS) has high moly.
NAPA Full Syn is (I think) VEPFS with a NAPA sticker on it.
Valvoline Extended Protection High Mileage Full Syn has the highest moly (of any affordable American oil that I know of).
You might also want to consider Quaker State Ultimate Protection Full Syn available at Walmart in USA, or Quaker State Ultimate Defy Full Syn from Canadian Tire in Canada.
You might also want to consider Pennzoil Euro and Mobil 1 ESP (both available from Walmart in USA) or Quaker State Euro (some grades available at Walmart in USA, all grades available at Canadian Tire in Canada).
The Valvoline oils I mentioned are known for high moly. The Quaker State oils I mentioned are known for high ZDDP and GTL.
That ^ had signifigant typos. It was late and I was tired. What I meant to say was:
Moly improves lubricity and IMO would help with flat tappet cam.
Valvoline Maxlife Full Syn has ZDDP and lots of moly. According to Lakespeed it's a very good type of moly.
Valvoline Extended Protection Full Syn (VEPFS) has ZDDP and even higher moly.
NAPA Full Syn is (I think) VEPFS with a NAPA sticker on it.
Valvoline Extended Protection
High Mileage Full Syn has higher ZDDP and the highest moly (of any affordable American oil that I know of).
You might also want to consider Quaker State Ultimate Protection Full Syn available at Walmart in USA, or Quaker State Ultimate Defy Full Syn from Canadian Tire in Canada. It as high ZDDP and might also have moly.
You might also want to consider Pennzoil Euro and Mobil 1 ESP (both available from Walmart in USA) or Quaker State Euro (some grades available at Walmart in USA, all grades available at Canadian Tire in Canada).
The Valvoline oils I mentioned are known for better than average ZDDP, and high moly, for USA oils. The Quaker State oils I mentioned are known for high ZDDP and GTL base oil, and might also have moly. I don't know how much moly in those QS oils.