IMHO I and many others just install Brad Penn brake in oil and be done with it. Run it up and down the rpm with a slight load in both directions - up and down the rpm range. Yes this can be seen as old fashion but has served many well for 60 plus years
I'm with you 100% on the slight load / up and down rpm range. Fastest way to seat rings, and end up with the most HP.
note: .....didn't know Brad Penn made brakes, but I'm usually uninformed about these "braking" developments, nevertheless, I want to be there when you put the brake(s) in the oil. .....don't just love spell check
Another vote against synthetic oil for break-in. Run regular 30 weight for first 100 miles. Drain and 30 weight again to 1000 miles. Then Mobil 1 forever........"
using a straight 30 wt. for a break in oil is great for accelerated wear vs. any multi viscosity. However, there is a difference between breaking in & wearing in. A multi-viscosity oil will reduce wear during start up and during the warm up phase, where much of the wear occurs. After an engine had reached full operating temperatures, a straight 30 wt. and a 0w-30, 5w-30, or 10w-30 have have the same flow properties,
https://www.blackstone-labs.com/oil-viscosity.php
".......FWIW, new Fords use that 5W20 Synthetic bland (per some buddies), new GM uses 5W30 Sythetic "Dexos" ONLY specified for my Acadia. Not sure about FCA or them furrin brands.
a partial list of a few of the cars using full synthetic oil from the factory:
note: The Fords listed below use this full synthetic oil for a factory fill, and recommended thereafter:
Motorcraft 5W-50 Full Synthetic Motor Oil. Part number is XO-5w50-QGT ( likely a re-branded Mobil 1 5w-50
):
Ford GT
Ford Mustang Shelby GT500 5.4 S/C engine
Ford Mustang Shelby GT500 5.8 S/C engine
Ford Mustang Boss 5.0 4v engine
Ford Mustang GT Track Pack 5.0 4v
Ford Mustang GT350 5.2 4v
Ford Focus RS 2.3 EcoBoost
most of the following use Mobil 1 as a factory fill:
Chevy Corvette, Corvette C7.R & Camaro Z/28
Mercedes,
McLaren,
Porsche
Aston Martin,
Nissan GT-R
Bentley
Chrysler,
Jeep,
Dodge,
Ram,
etc.
....back to your regularly scheduled program.
Z