for the 1100th time what oil do you use?

[butch86]

i am sure this has been asked 1100 times or so, but i have been reading about what weight and brand different people run.

i have used rotella t 15w 40 for years and years. the problem is the formulation has changed so much in the last few years its no better than bottom shelf oil ( store branded from the lowest bidder) i have been thinking of using moble 1 20w50 or amsoil high zink 20w50. i use zddp additive in everything flat tapped i own. the amsoil is very expencive about $11.50 a quart this would run 90 bux every oil change with the wix shorty racing filter i use on all my motors. i use melling select oil pumps and the cheap filters have been known to colaps with this pump.

most mechanics i know prefer moble 1 to most other oils. i am just looking for opinions on weight and brand yall like.

ps halvoiline and penzoil are a no go with me never will again. i would trust walmarts store brand first.