Not starting the car for months

[AMSOILGUY]

Since you believe this to be an oil related issue then I would use something different. The film of the right oil will still be protecting your engine long after a couple months. I use AMSOIL and feel protected during storage and use. There are other oils out there that will protect your engine better then what it sounds like your Mobil did. I can get your pricing on the AMSOIL product that you would want to use.