EHM dose not help or stop rocker issues. Stoping EGR dose. You can not compare european CRD VS US. Different oils, Different EGR systems and Different fuel.

What is a fact is Mobil 1 0w-40 has a proven record within the US in several types of cars.

I feel the reason we are seeing rocker failure when using 0w-40 is most people are using it and still running EGR's. Most people have no idea what a EGR is and that it is killing their engines. VM did not do enough testing with US EGR systems! I will not be buying a VM engine again. I have run MB, Volvo and VW Diesels, they all were great engines 200k on all with no major issues.

It's not the OIL its the ENGINE!!!!!

_________________
05 Liberty CRD Sport with Leather 115k
GDE ECO, No EGR, no FCV, (system gone)
Oil Drain plug P/N 090-039
K&N Air Filter, 2nd gen Fuel filter head
NEW Rockers & lifters
Mobil 1 0w-40
Stant 13519 195 deg inline Thermostat.
0 281 002 845 MAP
Etecno GX3123 7v Glow Plugs
Advance Gold 800CCA Battery
Traded it for a Quality VW TDI

I have been told by Mobil oil engineer that the Mobil1 0w40 is a good choice for this engine. It has great high temp shear resistance and it is a light duty diesel rated oil. That what the B3,B4 rating is in Europe. I started asking questions to my Mobil oil rep. after using a 5w40 and not liking the cold start and fuel economy when cold this winter. I have checked the idle air flow and it shows good. I have used 0w40 for almost all t of this Jeep's life and at the next oil change it will go back.
The reason I check to see what oil Mobil said would be good for it. I tow a travel trail during the summer that maxes out the tow rating. I told them that I would like the cold start performance and fuel economy back only if the engine was protected. I was told that the 0w40 was able to handle the load and heat.
Couple of things to remember all of the oils being talked about are 40 weight when hot. A 0 weight oil cold will get oil to the tight far from the oil pump places first. These newer engines keeping getting smaller oil passages in them and small place to come out of. Heavy duty engine run high loads at low rpm(1100-1500 rpm). Our engines run high load at higher rpm(1800-3000or more) depending on the gear.
I am thinking that heavy U.S. egr , and to long of oil changes with poorly designed oil filters maybe the biggest engine killer.

_________________
long live the diesel
Greendieselengineering
Full torque Eco-tune
0w40 oil
Mostly stock
Diesel's are towing machines

It's not the OIL its the ENGINE!!!!!


It' not the engine it's the U.S. emissions that is killing us.

_________________
long live the diesel
Greendieselengineering
Full torque Eco-tune
0w40 oil
Mostly stock
Diesel's are towing machines

Yes but wiht the EHM and the EGR disable it is still happening.

_________________
My CRD Build Thread
Soon to Come:more lights

These won't help if the damage has already been done. If you do the ORM or GDE early enough, the odds are much much better. And again, the EHM has zero impact on the rockers. That is solely to keep blowby gas/oil out of the intake system.

_________________
Mike Rausch
Bear, Delaware
2006 Liberty Sport CRD 253K

DIDO that

_________________
05 Liberty CRD Sport with Leather 115k
GDE ECO, No EGR, no FCV, (system gone)
Oil Drain plug P/N 090-039
K&N Air Filter, 2nd gen Fuel filter head
NEW Rockers & lifters
Mobil 1 0w-40
Stant 13519 195 deg inline Thermostat.
0 281 002 845 MAP
Etecno GX3123 7v Glow Plugs
Advance Gold 800CCA Battery
Traded it for a Quality VW TDI

Seriously?
You asked a Mobil 1 rep about which oil is best for cold starting and fuel economy?
What did you expect him to say, 20w-50?

Thats like asking an Orthodontist if your kid needs braces.
Of course your kid needs braces. You wouldn't be asking if you didn't already think so yourself.
And the Orthodontist will say, "absolutely your kids teeth with stay straight forever."

_________________
U.S. Army Retired

Ok, cant we all just admit that nobody REALLY KNOWS what is causing these rockers to fail?
Yes, we all know that EGR is BAD.
We all should already know the preventative measures to be taken to keep your CRD happy
and healthy.
With the exception of Geordi, nobody with a significant engine failure has posted an accurate
description of their vehicle maintenance history.

There is no preventative maintenance or perfect oil that will prevent the failure of a poorly
manufactured part.

_________________
U.S. Army Retired

No, I asked the rep, who put me in touch with one of the engineers. I told him that if I needed to stay with Delvac1 5w40 I would, if the 0w40 did NOT protect the engine well enough for my needs that I explained before. Mobil was making a sale either way.

_________________
long live the diesel
Greendieselengineering
Full torque Eco-tune
0w40 oil
Mostly stock
Diesel's are towing machines

Being A Jet Aircraft Mechanic, I work with Oil MFG's reps all the time. I to have asked Mobil about 0w VS 5w in the Jeep CRD?
Mobil rep said there very little difference between them. 1. Cold starting. After warm up nearly the same.

Pick what is best for you! Like Oil and

_________________
05 Liberty CRD Sport with Leather 115k
GDE ECO, No EGR, no FCV, (system gone)
Oil Drain plug P/N 090-039
K&N Air Filter, 2nd gen Fuel filter head
NEW Rockers & lifters
Mobil 1 0w-40
Stant 13519 195 deg inline Thermostat.
0 281 002 845 MAP
Etecno GX3123 7v Glow Plugs
Advance Gold 800CCA Battery
Traded it for a Quality VW TDI

Excessive soot causes excessive engine wear. Fact.
Lack of proper additive package chemicals exacerbates this problem. Fact.
US emissions regulations affect both US emissions related engine design and oil design. Fact.
Use of 0w oils was chosen by the vehicle manufacturer to boost mileage against the recommendation of the engine maker. Reported by several different sources. I accept this as conditionally proven, not fact.

Lower viscosity engine oils have a thinner film at a given pressure, and are less tolerant of particulate contamination than more viscous oils. Fact.

Now, if you start your engine once a day and drive it for hundreds of miles Before shutdown, your startup wear will be much less than somebody who is making a series of short trips with cooldown in between. In such a case, there won't be much difference in wear, but few people drive their CRD in such a fashion.

There are far too many reports of excessive rocker wear for me to dismiss them, especially since I have seen it with my own eyes. Reduction of soot load and use of oils of proper viscosity and proper additive package ingredients makes sense to me. As I do not live in a super cold climate I see no need for 0w oils. Given the recommendations of the engine maker, who, unlike Jeep, IS concerned primarily with engine performance and longevity, I use 5w-40 or 10w-40 diesel rated oils high in appropriate additives. I warm up the engine before booting it and I cool it down, too.

I expect to get 300,000 miles out of this motor before rebuild.

_________________
Grid power- the one true essential

2005 Liberty CRD- ARP studs, Fumoto, Hayden FC, inline Tstat, ETechno 7v GP, Platinum P1, in-tank lift pump.
1983 Volvo D24T
1981 Volvo D24
Dodge Cummins TD
Case 580B
Mitsubishi MT180 diesel
Kubota BX25 diesel

Applying enough time & money we all can get 300k from our engines. A good engine should not need Head gaskets, APR studs, mods to stop CCV, Tunes to stop EGR, Rockers / lifters, Fuel heads, fuel lift pumps. Just to get started. Before the engine hits 150k.

Sorry....VM is not a good engine. Don't get me wrong, I plan on keeping it for a long time and working on it throughout that time.

_________________
05 Liberty CRD Sport with Leather 115k
GDE ECO, No EGR, no FCV, (system gone)
Oil Drain plug P/N 090-039
K&N Air Filter, 2nd gen Fuel filter head
NEW Rockers & lifters
Mobil 1 0w-40
Stant 13519 195 deg inline Thermostat.
0 281 002 845 MAP
Etecno GX3123 7v Glow Plugs
Advance Gold 800CCA Battery
Traded it for a Quality VW TDI