Jeep Liberty CRD

Oil Analysis 2: Results

Posted July 21 2011 02:28 PM by Mike McGlothlin
Filed under: What's New, Diesel Suvs

Just as I suspected, the Jeep's engine is running much cleaner...

The soot level found in the engine oil (now that I'm running Green Diesel Engineering's Eco tune) went from 56 ct/ml to 4 ct/ml. That's an enormous improvement, thanks to the EGR system no longer reintroducing exhaust back into the 2.8L's intake.

In addition, underneath the analysis' lab control number, where it said "Monitor Compartment" for the first list of results, now says: "No Action Required." All wear metals once again checked out normal.

In addition to the huge reduction in soot content, Oxidation, Nitration, and Sulfation was reduced as well. The V100 portion (which indicates how well the oil is breaking down) also dropped from 14.4 to 13.8, so plenty of oil life was left at the time of the analysis (approximately 4,000 miles on Rotella's T6 5W-40 synthetic).

This is great news for us, as we'd like to see at least 300,000 out of the little common-rail 4-cylinder.

Reader Comments:

1. That thing will run forever. I want to help change the timing belt when its time. Can't wait to see inside that engine. It does have a timing belt right? Maybe we could get a chain retrofit kit put together.

jason.thompson - Posted July 22 2011 11:46 AM

2. It's racking up 2,500 miles a month right now, so it won't be long until we get to 100K. Then you'll have to steal another fuel sipper and motor back east to see its innards.

When we change the timing belt I'm also going to swap in some upgraded glow plugs, address the crappy factory intercooler plumbing, and maybe even throw on a turbo (if not before).

Mike McGlothlin - Posted July 22 2011 01:22 PM

3. ^Sweet stuff Mike! I really like small diesel engines, so easy to work, like little Kubota or Yanmar diesels. Fun engines.

Lots of VW Motori articles are definitely wanted :). I like Jasons chain drive idea, catastrophic engine failure is never fun.

Lets see what the Italian CR four-banger can do!

Smoken_Gun - Posted July 22 2011 01:35 PM

4. Forgot,

How is working of the VW Motori in the Jeeps engine bay? Is everything easy to get to or is it really cramped?

Just curious.

Smoken_Gun - Posted July 22 2011 01:36 PM

5. It's a little cramped to be honest. I'm not an 8-5 mechanic though, either. With a little finesse you can get to most general maintenance items though. Except the turbo. It's like it's hiding from you :)

And the fuel filter base is kind of a pain (tight area on driver side and you have to fight several wiring harnesses to change it) but nothing major.

Mike McGlothlin - Posted July 22 2011 02:17 PM

6. Good to know Mike, thanks! Im might snag on of these Jeeps up if I happen across one (someday). Pretty cool rides.

Im no 8-5'er myself. At 6'2" and 215lbs. its a pain to get to things usually.

Hows the turbo placement? Like a 5.9L/6.7L CR Cummins where its down and back there?

Smoken_Gun - Posted July 22 2011 02:52 PM

7. Actually, yes. It's somewhat similar to the common-rail's low, out-of-the-way placement, albeit in a much more cramped space.

Mike McGlothlin - Posted July 24 2011 09:17 PM

Add a Comment: (Must Be Registered)

User Name

Not Registered?
Signup today

Password

Comment