015 mercedes ml 250 bluetec (diesel). - Page 3 - PeachParts Mercedes-Benz Forum

pawoSD · #31 02-15-2020, 05:23 PM

Quote:

Originally Posted by t walgamuth

Where do you get the low ash liquimoly?

Usually either amazon, ebay, or fcp. Pelican doesn't carry it, they seem to only have a few of their products currently.

This is the one I use:

Technically its 229.51 certified and not 229.52....but my owners manual claims either is fine, so thats what I use.

Can also use MB branded 229.52 oil, not sure who makes it though, probably Mobil.

According to this document either spec is acceptable in the OM651:

https://bevo.mercedes-benz.com/d/d/en/Spec_223_2.pdf

t walgamuth · #32 02-16-2020, 12:07 AM

Thanks guys!

sloride · #33 02-16-2020, 11:48 AM

Quote:

Originally Posted by pawoSD

I change my oil about every 5,500-6,000 miles and this is a perfect (slightly conservative) schedule as verified by the oil analysis I had done by blackstone.

I use Liquimoly 5w30 low ash synthetic. (light blue bottle) and a Mann filter generally (or MB)

The emissions system isn't that big of a deal. Considering how everything else on the car is about 5x as reliable as the old ones I don't mind if I have to change an occasional sensor or Clean the DPF out every 50-70k miles. The relentless torque and driving dynamic makes it well worth it. Not to mention close to double the average fuel economy I used to get with my 420SEL. Really adds up when driving 1,500 miles+ a month!

Plus, they don't rust....at all, thats HUGE.

"They don't rust...at all" that would be HUGE. What is different on them? Could make me do some shopping, love the MB diesel, and no rust could make me drive a crossover.

barry12345 · #34 02-16-2020, 12:51 PM

They may have gone over to the Volkswagon system. Where a fairly thick coating of sacrificial metals is electroplated on the whole assembled body parts. Volkswagon gave a 12 year rust warranty for years. Now cut back.

With their customer service they have a lot of tricks in place to deny the coverage now on claims. A local guy took them to small claims court and won. In the last year.

The problem with the Jettas at least built in Mexico. Quality control was not followed. Some had the proper buildup and others far less of the material. There is no evidence of even light surface rust on the body or pan yet on the 2006 jetta for example.

The car operates in the rustbelt. I suspect without knowing this one was done properly. It may also have been a lower production year as well. I have seen the ones that were not done properly locally.

The wives Passat was built in America. I was told by a Ex Volkswagon employee. He thought they maintained quality control much better there. This plant was also running audi products as well.

pawoSD · #35 02-16-2020, 06:10 PM

Ever since about 2004 MB's have been fully galvanized and use better quality bolts, more aluminum, and the exhausts are full stainless. My 2005 C-Class I traded 2 years ago with 159k on it had been through 13 winters and had no rust worth mentioning, entire exhaust was original and in great shape. So far my GLK has virtually none, just a couple small spots I found on the subframe arms and rear springs that I cleaned off (just surface rust) and painted over. Metris has zero rust so far going through winter #2. GLK is on its 5th winter.

Compared to the pre-2004's its not even something you have to worry about.

sloride · #36 02-16-2020, 06:17 PM

I never heard of that. Thanks Barry and Paw.

BWhitmore · #37 02-16-2020, 06:32 PM

I currently own a 2012 ML350 and can state without exception it is the best modern car I have ever owned. MPG is approximately 25 mpg with lots of power from the V6 engine.

tyl604 · #38 02-16-2020, 06:32 PM

You say that since 2004 they have been doing better on rust prevention and have been using better bolts. My '81 300SD has no rust and still has the original muffler. When did MB start using inferior parts?

pawoSD · #39 02-16-2020, 06:59 PM

Quote:

Originally Posted by tyl604

You say that since 2004 they have been doing better on rust prevention and have been using better bolts. My '81 300SD has no rust and still has the original muffler. When did MB start using inferior parts?

Your SD has no rust because you don't live in Michigan where they pour a hundred million tons of salt on the road every winter that gets into every nook and cranny on the car when driving through slush filled blizzards....

My 300SD went through about 25 winters (in PA then 12 of them in MI with me) and it was dissolving around me despite my best efforts to keep it alive.

sloride · #40 02-16-2020, 08:17 PM

Quote:

Originally Posted by pawoSD

Ever since about 2004 MB's have been fully galvanized and use better quality bolts, more aluminum, and the exhausts are full stainless. My 2005 C-Class I traded 2 years ago with 159k on it had been through 13 winters and had no rust worth mentioning, entire exhaust was original and in great shape. So far my GLK has virtually none, just a couple small spots I found on the subframe arms and rear springs that I cleaned off (just surface rust) and painted over. Metris has zero rust so far going through winter #2. GLK is on its 5th winter.

Compared to the pre-2004's its not even something you have to worry about.

Sorry TW to go off topic, but goes the same hold true for 05-06 W211?

barry12345 · #41 02-16-2020, 09:01 PM

Okay I will try to expand my description. When the wife was involved in an accident with the 2000 Jetta. There was not a usable panel left on the car and all the glass was gone.

In one specific area I was able to see. The electrolytic coating had separated from the parent metal. It surprised me how thick it was.

This led me to believe it had to stay in a tank a signifigant amount of time for this to build up.

As over the years some seem to become very rusty and others not. I kind of thought a logical place to speed up production would have been to reduce the coating tank time.

It was thought not really safe to have company employees from Germany in that plant for many years. So quality control was left to Mexican nationals. The problem may have been wages that where even sub standard for the area at that time. My under standing was that was not a happy plant for the Volkswagon corporation for years.

I do not believe the application is by just dipping. I also do not believe the application was using pre coated steel. I only wish now I had done some tests on that piece or at least retained the separated coating.

Since it would have been on both sides of the parent metal. I suspect it increased the cars weight being as thick as it was.

There were no paint adhesion issues on those cars either. That kind of eliminated the coating as galvanized. True straight galvanizing usually presents paint adhesion issues. When I did look at that sample it was actually a pretty dull metal presentation. I do not know exactly what Mercedes is using on their newer cars.

Why the detail? Never Weld on that kind of metal or take a grinder to it. The fumes or the dust from that coating would be highly toxic in all probability.

pawoSD · #42 02-17-2020, 01:14 AM

Quote:

Originally Posted by sloride

Sorry TW to go off topic, but goes the same hold true for 05-06 W211?

Yes....all MB post 2003 (and some mid 2003) are galvanized so that would include W211 (probably all of them produced).

The change on the W203 is dramatically apparent as the ones made after 2003 don't rust, and the ones prior rust horribly. Someone around the corner from me has a 2002 C320 wagon and its rusting horribly, even worse than my 2001 E320.

t walgamuth · #43 02-17-2020, 06:25 AM

Quote:

Originally Posted by sloride

Sorry TW to go off topic, but goes the same hold true for 05-06 W211?

Sometimes the best part of a journey is the side roads.

crazy4diesel · #44 02-17-2020, 02:18 PM

Quote:

Originally Posted by pawoSD

Usually either amazon, ebay, or fcp. Pelican doesn't carry it, they seem to only have a few of their products currently.

This is the one I use:

Technically its 229.51 certified and not 229.52....but my owners manual claims either is fine, so thats what I use.

Can also use MB branded 229.52 oil, not sure who makes it though, probably Mobil.

According to this document either spec is acceptable in the OM651:

https://bevo.mercedes-benz.com/d/d/en/Spec_223_2.pdf

Pelican does sell Liqui Moly Top Tec 4605 - 5W-30 Synthetic 4605 2244

t walgamuth · #45 02-17-2020, 02:20 PM

Thanks Crazy 4!