Which oil do you use

[mlipmd]

Spork -"If saving 30-50 bucks a year on oil is making or breaking your budget, high performance cars may not be for you." Did trying to demean me make you feel better?

There is very little difference in 0W, 5W, and 10W in performance, and Mobil 1 is available near me while Amsoil 10W-40 is not. It's not the $10-20 difference in price that counts.
Other than pontificating about various "points" of Kinematic Viscosities and VI, can you give any objective evidence of lower pressures at cam journals and bearings, how you measure that, and the damage that is happening to the engine because of that? And your engine oil gauge is what, useless? Also, the viscosity designator on the bottle can be misleading? Then how do you buy any oil then if you can't rely on the manufacturer's designation?
And you are wrong about the cold winter temps down here, I don't know where you get your info from - it is very often in the 30s and frequently in the high 20s here in the winter.

This discussion is becoming the same as what tire pressure you run, that which is on the door sticker, or 1-2 lbs. higher or lower than what is written there to suit your driving preference.