about 1000 for them to set. But for full break in about 2500
The first 1000 miles should be driven with ease to break in the car. This is UNTRUE! The honing process on the cylinder walls create peaks which are quickly worn down to create a seal with the piston rings. The spring pressure from the rings is nowhere near what is needed for proper sealage. The combustion process is what expands the rings to conform to the cylinder walls. Good acceleration and deceleration is a must to create a good seal. So, go ahead and accelerate a good amount to wear in that engine properly, just watch the RPM's. The window of opportunity is very small [less than 60 miles for the first 75% of the break in process]
Worn engine rings or valves Worn engine rings or valves
depends what typ of engine it is
Sounds like you may have lots of miles on your engine. It normally means there is a lot of blow-by in the engine. Your engine is probably starting to use oil because the oil rings are worn.
The cost to replace engine rings is at least $1800. The bulk of the price comes from the labor needed because the engine must be disassembled to remove the pistons in order to replace the rings.
In a Brand new engine it is recommended that you get the rings seated before you start using Synthetic oils. So run your engine for 3,000 miles and then you can switch to a Synthetic.
leaking rings
4 rings....
bad piston rings Excessive engine wear - Rings, Valve guides, Valve seals
Some of them are made of chrome molly but I'm shure there are other compositions as well.
I wouldn't bother. If it's seized from sitting, the rings are probably shot. If it seized from overheating, the rings and cylinder walls are most likely shot. If you do want to attempt, I have heard OLD break fluid works wonders.
The rings are like a gasket between the engine and the pistons. explosions happen in the engine which push the pistons to turn the engine and keep it going. If the rings are bad the explosion escapes and doesnt push pistons like its supposed to and engine wont run.