Use something slippery :lol:
The main concern is cam/lifter breakin then piston ring seating.
IMO no one should be using 15w40 in our local area. The viscosity at 75F is by far too thick for good flow and it creates high pressure which is not beneficial especially whenthe engine is cold. Cold startups are the worst for wear. Excessive amounts of pressure doesn't lubricate.
You can buy \"dino\" Rotella T 10w30 with aproximately 1000ppm zinc. Get your bottle of GM EOS. Crank your engine till you get oil pressure (remove power to coil/disconnect trigger from dist) and start your car up and keep it at 2500 rpms for 20 minutes. In that period of chewing your nails
try to set your total advance to 28-32 degrees. Look for any fatal oil leaks too.
Do you have a full flow setup with filter??
IMO you do not have to throw out the filter immediately. Check for oil leaks first of all and then drive your car hard accelerating then decel (gear in) This forces the piston rings to seat in the cylinders.
heres some reading material
http://www.mototuneusa.com/break_in_secrets.htmAfter your \"load\" breakin pull her in your garage and dump the oil and change the filter. Next day when cold adjust your valves.
People always have breakin rituals. Your main focus is cam and lifter breakin. You do not want to constantly just idle your car or blip the throttle because your not breaking in your virgin piston rings. This is why you must drive your car like you stole it.
What lifters are you using???
Dont ask me how I broke in my fresh new 2332 this spring
With my Udo becker tool steel lifters I started my fresh engine and idled it
played with the carbs. Then I banged a couple 8 grand shifts and voila done. With any other lifters I would NOT recommend doing such a thing.
Get a friend to watch for oil leaks and set the timing while you keep a consistant rpm of 2500.
