nicknitro25

I would like to read up a little bit on how to break in a new V8. I have heard that I should take it slow for the first 500 miles or so then I can really lay in the gas. I have also heard I should really push the engine right from the start.

Anyone have any advice?

brdm266

Owners manual for '07 says nothing special requiredexcept avoiding going at same speed/RPM for too long.

mygt500

1+

Arwing

Personally I would take it easy for at least 250 miles. Then you can get on it. JMO.

I just wouldn't run up to 6k in first and second, right off the dealer lot.

Jays Mustang

It's not like breaking in an engine you built in the garage. But You should take it easy for a while. As said, not at one speed during the first 500 miles. My car I didn't even take on a highway during that period. I don't agree with beating on it early though. What your trying to do is get the rings to seat properly. Flooring it allows them to spin (rings) and have the gaps line up. Now you have it burning oil. Just take it easy first couple thousand. Which I had on the car in a few weeks. Oh and I have 0 oil consumption. When I change at 3000 miles the oil level is right at the full line.

Scotty07

There have been hundreds of thousandsof 4.6 engines put into Crown Vics used by LE agencies over the years and I doubt a single one of them drove them easy for the first 500 miles....


These are not some hand built high tech engine with chrome rings, etc etc, that you need to let seat. Just take the car out, drive it, and enjoy

GidyupGo

+1

For you old school thinking boys, if you lollygag around for a few hundred miles, it won't break in. Things will stay the same and the cross hatch pattern (if there still is one on these new engines) will still be there. You run the risk of glazing up the cylinder walls with baked on oil and you never will get it broke in. Have to re-hone the walls. Just drive the car, have fun with it but don't be stupid. Listen to that little voice in your head.

Jays Mustang

That's true about cops. But they didn't pay for the car either. Just like beating on a rental. What's the big deal about taking it easy for a few weeks. Plenty of time after that to put it through it's paces.

GidyupGo

No big deal. Just don't do it. Drive it like you would if it wasn't new. Go out on the highway, hit passing gear a few times etc. The rings have to seat. The quicker you get this done the better. Now, they aren't like the older engines. It took a really long time to break in those. Closer tollerances with this design so less break in time.

2cokeman

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