[eastexsteve]

Nope, Cross hatch is visible even after 100k miles in modern engines. The cross hatch is what holds the oil in the cylinder walls.

See any cross hatch in this cylinder? Want more pictures? http://i305.photobucket.com/albums/nn213/Disher04/DSC00091.jpg

[dynoman]

https://www.corvetteforum.com/forums/c4-tech-performance/136667-100k-miles-and-cylinder-walls-still-have-a-cross-hatch-hone-pattern-this-normal.html

“I have 5.0s with 160k miles that have perfect crosshatch” (it’s a problem it’s not there at 30k miles)

“I must have torn down 10 or 12 SC engines all with over 120K on them and every one of them still had the factory crosshatch in them.”

“I just tore my motor apart and after 153,000 miles the hatch looks untouched.”
https://www.sccoa.com/forums/threads/why-no-cross-hatch-after-only-30k-miles.58582/

“There is cross-hatching still in the cyl wall, with only a hair of soot at the top of the throw, no major ridges. I think this engine had 200,000, maybe 300,000 miles on it.”

“I have seen engines with no internal work done have cross hatching after 180,00 miles.”
https://www.thedieselstop.com/threads/cross-hatching.336425/

[dynoman]

I just went to my shop and took this picture of a Dodge Magnum 360 with over 200k miles.



It was a running engine I used to test on my dyno with factory fuel injection. It was in preperation for the other 360 engine I referred to. That 360 had so little cylinder wear I was able to use .005 over Diamond pistons. I honed with torque plates and removed maybe .003 - .0035 off the cylinder wall, and it cleaned up perfectly. The Napier second rings probably account for some of the low oil consumption for that engine. Most people change at 3000-5000 miles and don't really know what an engines oil consumption is if they don't add between changes. Like I said before I change at one year or 25k miles, when you do that you know if the engine is using oil.

[dynoman]

It looks like there is a ridge in the cylinder but there really isn’t. Not one that you can catch with a finger nail. If I ran a hone in that cylinder what looks like a ridge would disappear fast and blend in with the rest of the cylinder. It’s mainly carbon on the cylinder wall.