Originally Posted by gabarus
I see that Chrysler has stopped using Mobile 1 5w 40 low ash esp formula M and has replaced it with Pennzoil Ultra Hyper 5w 40. (that is what the dealer just put into my CRD)
The Mobile 1 spec is MB229.51.
The Pennzoil spec is 229.5.
The 229.51 spec is a tougher spec than the 229.5.
So here is my question, is this a good replacement? Will it screw up the diesel particulate filter?
Will it break down or get gunkey before the next scheduled oil change?
Any answers would be appreciated.
It ain't right. I think you should make them change it.
Right after I got my CRD, I put the wrong oil in it and drove 3000 to the next change...pulling a trailer most of the way. About 200 miles into it.... I discovered my mistake and then worried the rest of the trip. Changed to correct oil when I got home.
At the time, I did not even know what a DPF was or that it could get clogged. I did not know the reason for the .51 part of the spec. Well.... my engine did not blow up and my DPF did not clog.... Now I know that the engine was not at risk... the .51 is to protect the DPF.... so I got lucky.
Now I don't have a DPF and I am happy about that...so I can tone down the oil.
When the spec is written right there in the owner's manual, I'm surprised that they are trying to get away with that. May be they are ignorant of the risk. Or maybe the risk is overstated (nah).... but the spec is there for a good reason I think. Maybe they want to sell you a DPF.... ouch! Did they tell you to drive 10,000 between changes...that would give it plenty of time to clog.
I change every 6000 now because I tow a lot. Others on the forum go the full 10,000.