Changing oil type question

[clickman]

Considering the car will be sitting for 6-7 months (maybe more) after this oil change, I want to make sure I'm not obsessing about deteriorating engine components while it sits. Ok, yes, I'm a Type A personality.

Jake, the only Valvoline VR-1 non-synth I can find is 20W-50. Will that do?

What about just using this Amsoil flush instead?

http://www.amsoil.com/lit/databulletins/g2763.pdf

Or Motul Engine Clean? (scroll about 3/4 down)

http://motul-canada.com/en/products/products_list.html

I would add one of these to the existing Mobil1 (~5000 miles on it), drain it with the M1, and then refill with the Castrol, run a few minutes, and then put into storage.

Thanks.