I just bought my 04 chevy silverado scsb truck with the 5.3. It only had 3 miles on it when I bought it... so is there a proper way to break this engine in, or is there anything special that I should do?

 

Talk about opening a can o worms. Many many opinions on this one. Mine is drive it like you plan on driving it from day one. 1st oil change 500 miles. safely switch to sythetic any time after that.(if you want) If you read any old posts, find the "got the 408" in from parish. New motor. had Gtech times like the next day. You have a 36000 mile warrenty make sure that sucker is gonna run now not when it's your dime.

 

Id drive it like it I do everyday. Too many of these motors out there they were probably run from day one and not had problems.

 

Drive it like you stole it. If it breaks, it would have broke any way you drove it. Besides you have a warranty....so use it if you have to.

 

Well I got my 2003 ecsb 5.3 with around 40 miles and Dogged it out the first day.. and now its got 65000 miles on it and the guys who just did my cam swap said it was a very clean engine.. so..

 

i did my first oil change after about 20 minutes idleing. then drove it sort of easy for about 100miles, then moderately for about 300more and changed the oil to synthetic. then ***** to the wall!!

i think on factory new stuff you do the same but can skip the 20 minute oil change.

 

LOL Jim, I like the 20 minute breakin and then an oil change. Thats hella funny

 

Drive it like you stole it. Trust me, they "break" them in at the factory That motor sees redline SEVERAL times before it is shipped.

 

i let mine idle for 15 then changed the oil, then i was kind of easy on it for 200 miles then it was time to see what it could do... changed the oil at 500 and plan on changing to full synthetic after 3000 miles are on the engine

 

another vote for drive it with your foot to the ground from day one