Okay, so I've been told that to break in the motor I should use Rotella T, getting rid of the need for additives. This I understand, but should I use this Diesel oil in my car ALL THE TIME? Or is there another oil I should probably go with. If you are gonna say use regular and add additives, I think it would be the same as the Rotella T sooooo? I'm more worried about, the detergents clogging the passages up like we all know the Y has probs with....



So what's everyone's take on what motor oil to use on a DAILY DRIVER???



BTW, just spent $2400 on a complete rebuild, has the Clay Smith street grind cam...Reaaalllllll mild. Mummert Sells it. .30 over and gonna run a 450 CFM Holley, I think.

William



1957 Ford Fairlane 500

292 Bored .30 over

Fordomatic

Ford engine plants don't use "break-in" oil, either.  It's regular multi-viscosity oil with a dye that shows up under black light (for oil leak detection).  The difference is, production engines are run soon after they are assembled (cold test, then hot test).

Ours engines are rarely run until they are in the car.

For "break-in" oil, I mix red STP with a little 10W-30.  It hangs on and has no problem mixing with the real oil as it washes away under normal running.

Royal Oak, Michigan (Four miles north of Detroit, and 12 miles NORTH of Windsor, Canada).  That's right, we're north of Canada.

Ford 292 Y-Block major overhaul by simplyconnected