engine wear

[mike100]

Used motor oil has all kinds of crap if you look at it under sunlight.

[mike100]

Originally Posted by Dynomite

But....But...if he has contaminated oil...I guess I would first drain that old contaminated oil (and remove the old contaminated oil filter) and determine where that oil contamination is coming from before I run the engine on that old oil.....just saying

I disagree. If there is catastrophic contamination, the engine is already done. That's why I would just drop $5 worth of oil in it to bring the level up. Run it a little to carry crap to the filter and THEN change oil if the condition improves.

[Dynomite]

Originally Posted by mike100

I disagree. If there is catastrophic contamination, the engine is already done. That's why I would just drop $5 worth of oil in it to bring the level up. Run it a little to carry crap to the filter and THEN change oil if the condition improves.

Originally Posted by mike100

Used motor oil has all kinds of crap if you look at it under sunlight.

[Franke]

You definately need to find out why the high crankcase pressure which may be forcing the dipstick out of its tube. High pressure will force oil up the cylinder walls among other things and eventually past the seals too. Really check the PCV sysytem well and also if the plenum was removed did they put the crankcase vent tubes back properly. This all could cause excessive oil consumption as well.

[90ZR1#1221]

so pretty much chances are this thing is going to have to come out and come apart to fix whatever is causing this issue and to make sure I don't lose an engine.

[A1990]

You might want to contact -=Jeff=- as this post indicates he had the same problem as you.

http://zr1.net/forum/showthread.php?t=8561

[90ZR1#1221]

So drained the oil and cut the filter open. Both the engine oil and the filter were full of what I would say looks like brass. It's not magnetic however did find a few pieces of metal that stick to my magnet. Took an oil sample which will get sent out tomorrow to see exactly what types of metals I have in there. Till then it'll be sitting in my garage under the car cover till I figure out what my next move is. image.jpg

[Dynomite]

Geez.........I do not know what to say
Guess I would remove oil pan and take a look at lower end (engine in car).
Looks to me you are going to be pulling the engine.

[90ZR1#1221]

Refilled the oil. Ran it for about 45 minutes at idle. No knocks or ticks it sounded great. Let it cool down drained the oil pulled another sample to send to the lab. Still could see a lot of shine in the drained oil. Cut the filter again and it didn't look like much metal was caught in there this time. Now its time to sit on pins and needles awaiting the results of oil analysis. But yes regardless she's gotta come out and get tore down. Catastrophic failure or not something isn't right and something needs replaced. This lt5 is beyond me nor do I want to mess with an investment like a zr1 so I'm thinking mongoose motor sports is going to have take care of the one. I would compare what the motor oil looks like to transmission fluid when you change it. Except an engine doesn't have clutch packs and the oil shouldn't be as shiny.

[Kevin]

I'd offer to drive out and see if I could help, but I don't know all that much about working on these cars. Wish I could help, I really do. I also hope you get this figured out soon. So frustrating when you have a car that won't work the way you want