Thick oil

[Rawze]

That is pretty nasty. I have seen that type of failure before from factory engines. Someone I know saw a rash at a fleet of several trucks with consecutive serial numbers with that same piston nozzle mis-alignment and melted pistons on 2350's last year. Cumins would not even warranty the engines even after all the evidence pointed clearly at them. Nozzles were being rubbed by the piston rods on I believe it was #4 cylinder on all of them.

Even so,,... what looks like is wrong with the sludge factor is a separate issue. --- NOT CHANGING OIL OFTEN ENOUGH!!! and possibly letting it go way too long with coolant seeping into it? ---- ENGINE ABUSE!!!

from this post...
http://rawze.com/forums/showthread.php?t...617#pid617

Quote:Do the right thing,.. change your oil based on your fuel consumption instead of regular mileage intervals.

Here is what I would recommend to others based on what I have seen..

If your average fuel mileage every 10,000 miles is ...

less than 5 MG -- Change your oil every 8,000 miles or so.

5 - 6 MPG -- Change your oil every 10,000 - 12,000 miles or so.

6 - 7 MPG -- Change your oil every 12,000 - 15,000 miles or so.

7 - 8 MPG -- Change your oil every 15,000 - 18,000 miles or so.

8 - 9 MPG -- Change your oil every 18,000 - 22,000 miles or so.

above 9 MPG -- Change your oil every 22,000 - 28,000 miles or so.

These recommendations are based on more than just engine wear alone. They are based on getting the most engine life vs the cost of oil changes themselves, and the fact that soot and other deposits are going to keep building up in your engine more rapidly than you can flush them out. A bypass oil filter system can extend this, but not by the claims they are making. You would be good to get an extra 4,000 - 5,000 miles on your oil before having to change it anyways. That is my experience on it, and is what I tell others that ask about these types of systems, etc.