I hope this has not been covered before..........I did search the forums for the answer and came up empty handed.
I have a 72' pantera which I recently inherited from my father. The vehicle sat for almost 2 years without being started. I pulled the plugs, sprayed some mystery oil in each cylinder (thanks to you guys for the advice), ran the motor and fired her up. Fired up like it was never sitting and took her for my first drive ever. Enough rambling.....
My dad was running amsoil 10w40 which served him well for the amount of time that he drove it(which was very seldomly, and in moderate temps around 55-80 degrees F). I intend to run the car more often and from early spring (now) to the height of summer (and into fall). I live in Wyoming and in August the temps can easily be over 100 degrees F. My issue with the Amsoil product has nothing to do with it's quality but has to do with it being unavailable within 100 miles or more from my home. I don't feel like paying to ship already expensive oil to my home when I can go to walmart and buy mobil 1 off the shelf.
If I switch to Mobil 1 will running the motor until hot allow me to drain off enough of the Amsoil to avoid any real problems (ie the mixing of the synthetics)?
One last question (which I know is an unanswerable question as I've read the battles before)..........Does 10w40 in the cooler months and 15w-50, 5w-50 or maybe 20w-50 in the peak of summer sound like a good plan? The motor's mods as far as I know include just a slightly lumpier cam and an aluminum intake.
Original Post