This is what I have come down to doing. Bradd Penn Break-in oil with a Jomar 100% No Bypass oil filter seems to be the best combination for initial ring seating. After the engine is run in and fine tuned on the dyno, swap out the break in oil and filter, inspect filter and then fill with high quality oil and a fresh Jomar filter.


1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)