4 1/2 or 5 quarts of oil with 1/2 quart of ZZDP?

S'cuder said

VR-1 is a good choice. I can't get the 10W-30 for less than $10/qt in my area. If you can find the 5 qt container, it'll be a lot less than that.

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I run 20W/50 don’t ask why, there is no real good reason other than 15 years ago I got a case of 20w/50 brad penn and ran it. It worked and I just keep running it. Leaving power on the table moving that maple syrup? Maybe. It’s like the stuff in your wallet, no idea why, but not changing.