Just finished replacing my headgasket on the 5.7 burb. I have been letting it warm up to temp then slowly driving it around the neighborhood.
Do I need to do any kind of engine break-in procedure?
How soon should I change the oil? Also I have 20 gallons of fuel that is a year old in the tank, is this a problem?

Thanks for all the help.

Just don't overheat it of course, dump the fuel asap. If you didn't change the oil right after the repair, do it.

Just don't overheat it of course, dump the fuel asap. If you didn't change the oil right after the repair, do it.

The oil was changed when I put the heads back on. When you mean " dump the fuel" does that mean siphon it out or burn it through the engine. If I burne it through the engine should I add any kind of fuel treatment to it??

thanks for the help.

The oil was changed when I put the heads back on. When you mean " dump the fuel" does that mean siphon it out or burn it through the engine. If I burne it through the engine should I add any kind of fuel treatment to it??

thanks for the help.
Well I would try and get as much out as possible, could be pretty stale and may have accumulated some water.