Cylinder leakdown higher after engine rebuild?

[digger]

Why don't we circle back to why the oil light came on... I'm already against wasting money on a pointless oil analysis. They're misleading almost always and clearing don't understand how oil pressure works. Previous oil burning could've just been slightly failing piston rings. That will certainly not cause a low oil pressure. Low oil pressure will cause scoring on cylinders though. If you're not consuming oil, then the scoring is more visual rather than damaging. All engines have some scoring which is fine. I went to reread the original and I'm not sure why an oil analysis company telling you piston rings are causing low oil pressure didn't raise a red flag immediately. That 15W-50 may have been a no go, especially if it hasn't happened since going back to BMW 10W-60.

I would definitely check oil pressure and make sure it isn't low. Let me get you some specs on that because stock specs will apply in this case.

OP seems to be talking about the oil level light, not oil pressure light. this is why the oil company said burning oil might cause that. they most certainly did not claim that "piston rings are causing low oil pressure"

[Chanman1029]

OP seems to be talking about the oil level light, not oil pressure light. this is why the oil company said burning oil might cause that. they most certainly did not claim that "piston rings are causing low oil pressure"

Correct, sorry if I was not clear enough in the beginning about that.

[Arith2]

Correct, sorry if I was not clear enough in the beginning about that.

I saw oil light and clogged oil filter so I thought it was the red oil light. Sorry about that.

[bigjae46]

7?! Please explain lol. You changing out an engine every track event

I just got a great deal on a bunch of motors with issues. I was planning to build a spare S54. If my engine goes then I’m going LS, S85 or maybe a B58.

[Slideways]

This guy seems to have a similar problem with his rebuild - 3000km, consumes oil and scoring marks on the cylinder walls:

[Chanman1029]

This guy seems to have a similar problem with his rebuild - 3000km, consumes oil and scoring marks on the cylinder walls:

Luckily I’m not noticing anything oil consumption, atleast as of now. But those marks he has look very similar to the ones I have.

i got on a dyno last week, and made fair power, 314whp.
Epic motorsports tune, underdrive pulleys and electric fan, AA headers, no cats.