Is it safe to mix 0W20 and 5W30 in 75/25 proportion of the same oil brand and type?

[SammyChevelleTypeS3]

I’m about to run Amsoil SS 0W30 in my wife’s Pilot. Just like the thick cool kids do. I already run SS 0W20.

I have some Amsoil SS 0w30 in my shop just waiting for use in the 2009 Honda Accord that has been on 5w20 for years doing fine. I am just going to use it since I have it and already use HPL in the other car. The 5w20 has been fine oil since day one in that engine. Plus an oil change in that car lasts me at least 12mo since I put very little miles on that car anyway. Plan to give it to nephew in a few months when we get another vehicle. Looking at Toyota Rav4 / Honda CRV and Honda HRV and possibly a Honda Hybrid.