[Ed Wright]

Zero-10wt Royal Purple is the only oil I would run cold. Never tried to run anything else without putting some heat in it. Patterson puts Gibbs (now Driven) oil in his Comp & SS stuff. I use the BR30 (5W30 wt break-in oil) with no problems. If you drain it cold, it leaves a lot of stuff black in your pan. I like to warm it up, or drain it not long after shutting it off. Black stuff is still in suspension. I haven't tested the zero wt Gibb's/Driven oil yet. Alan Patterson says it's good, so I am sure it is. I run my clearances on the right side. Loose engines seem more forgiving to me. Just what I have seen with my junk. Can't afford to have it done, so cobble my junk together myself.