Mobil Delvac 1300 Super 10W-30 - Page 3 - PeachParts Mercedes-Benz Forum

dariod · #31 07-31-2009, 11:15 AM

Now the question what would be considered the BEST oil for a 1993 2.5 not caring about cost?????? Thank You in advance

Gurkha · #32 07-31-2009, 12:25 PM

Funny part is that in every UOA done, oils like Delo 400 and Mobil Delvac Super match UOAs of synthetics pound for pound even with extended OCI. Its only when temps go down real low that good synthetic HDEO like Delvac 1 or Delo synthetic show their mettle. Otherwise for general conditions, Delo 400 or Delvac Super would do excellent. I have run diesels on these two and my engines have gone trouble free for miles.

Hatterasguy · #33 07-31-2009, 12:51 PM

Quote:

Originally Posted by dariod

Now the question what would be considered the BEST oil for a 1993 2.5 not caring about cost?????? Thank You in advance

Redline, IMHO its the best oil any money can buy. Its VERY pricey because they use the best base stock money can buy.

Now the question is do you really need it? I didn't feel it was worth the cost, if I had a very valuable collector car like a Gullwing I might.

Oldwolf · #34 07-31-2009, 01:11 PM

Quote:

Originally Posted by Gurkha

Funny part is that in every UOA done, oils like Delo 400 and Mobil Delvac Super match UOAs of synthetics pound for pound even with extended OCI. Its only when temps go down real low that good synthetic HDEO like Delvac 1 or Delo synthetic show their mettle. Otherwise for general conditions, Delo 400 or Delvac Super would do excellent. I have run diesels on these two and my engines have gone trouble free for miles.

What OCI did you use with the Delvac and Delo Gurkha?

Gurkha · #35 07-31-2009, 01:50 PM

Quote:

Originally Posted by Oldwolf

What OCI did you use with the Delvac and Delo Gurkha?

Worse case scenario I have stretched it to 6000 miles with some real killer short runs and some bad dusty 48C weather drives, all done at six month interval. Delo did slightly better than Delvac.

If you go to BITOG, plenty of Blackstone OAs around which you can compare with Mobil-I, Delo 400 and Delvac Super.

Oldwolf · #36 07-31-2009, 02:04 PM

BITOG is great. But very few MB UOA's that I have found.

Gurkha · #37 07-31-2009, 02:11 PM

Quote:

Originally Posted by Oldwolf

BITOG is great. But very few MB UOA's that I have found.

There were quite a few but most of them have either been archived or removed due to age. There is another significant UOA done on Ford Powerstroke diesels which are known to be oil killer due to their design. Even there Delo 400 did significantly better than others.

Oldwolf · #38 07-31-2009, 02:25 PM

It kind of reads that Delo 400 is better than Delvac 1300. But it might not be too much of an issue if the changes are less than 5000 miles. I wonder which is best for a small turbocharged diesel (like mine)?

Jeremy5848 · #39 07-31-2009, 02:32 PM

Quote:

Originally Posted by Gurkha

Funny part is that in every UOA done, oils like Delo 400 and Mobil Delvac Super match UOAs of synthetics pound for pound even with extended OCI. Its only when temps go down real low that good synthetic HDEO like Delvac 1 or Delo synthetic show their mettle. Otherwise for general conditions, Delo 400 or Delvac Super would do excellent. I have run diesels on these two and my engines have gone trouble free for miles.

I agree. My wife's '96 E300D (W210, OM606NA) gets driven to snow country every winter so it uses Mobil 1 5W-40 synthetic. Because the car gets driven regularly but only about 8,000 miles a year total, I change oil and filter once a year, on the anniversary of purchase.

The three POs of the '96 all used dino oils, changed at dealer intervals (7500 miles, I think) for the car's first 250,000 miles in Oregon and northern California (no snow). That must have been OK, the car's oil tests come back showing no problems and the engine consumes and leaks no oil between the annual oil changes (the car is now at 262,000 miles).

OTOH, the '85 and '87 run on Delo-400 because they are not allowed to play in the snow. I put Mobil 1 in the '85 the first year we had it because we drove it to Salt Lake that first diesel winter but the next oil change I went back to the Chevron oil.

Jeremy

Gurkha · #40 07-31-2009, 03:21 PM

Quote:

Originally Posted by Oldwolf

It kind of reads that Delo 400 is better than Delvac 1300. But it might not be too much of an issue if the changes are less than 5000 miles. I wonder which is best for a small turbocharged diesel (like mine)?

Either would do fine, use Delo 400 on my OM616 turbo and OM617 turbo.

erik · #41 08-27-2009, 09:08 PM

what about NA diesel like the 606.910? Delo/Delvac overkill (or is there no such thing as overkill when it comes to oil)?

71inka02 · #42 08-27-2009, 09:33 PM

Go with Valvoline Premium Blue Heavy Duty Diesel 15W40 - it's factory fill for Cummins, meets and exceeds everything you need...And in North Carolina, if your car is 'in tune' you'll have no starting issues in our cold weather...

Corey · #43 08-27-2009, 10:39 PM

Everyone has their own opinions about the best oil to use, some follow the MB spec sheets carefully, others follow used oil analyses of their own or posted by others on the internet, and some just look for an oil meeting API C* (compression ignition) standards. There are people on this forum with far more knowledge than I, that may be able to quote convincing data. However, it's easy for oil discussions to become arguments of almost religious proportion, with firm beliefs in what practices are best and with little to support an argument but anecdote. From lurking on a bunch of old oil threads over the past few years, a few consensus things have stuck out to me:

->Don't mix oil grades (weights), the formulations, chemistries, additive packages are complex and the results you get may defy simple logic

->Fully synthetic (API group IV and V) oils perform better in extreme cold, in terms of easier starts, presumably due to better viscosity profiles at those temperatures

->At the least, use a diesel-rated (API C*) oil in a diesel engine. One of the biggest factors is the oil's ability to suspend soot, which is a necessity with diesel engines.

->Lubricant technology has made great strides in the past 15-30 years, and our original owner's manuals do not reflect that in their recommendations

**For those out there who know a lot more about the subject than I do, please correct me on any factual errors I might have made above!**

For NC, you probably will never see "extreme cold," and the synthetic starting benefit may not be an issue for you, but I could be wrong, I'm from up north.

As for me, I'm using Mobil 1 Turbo Diesel Truck 5W-40 in my 240D right now. You'll note on the spec sheet that it doesn't meet MB 229.3 or 229.5, which apparently are the specs MB recommends for my vehicle, a passenger diesel engine older than MY1997 without the flexible service system (FSS). Although I've had good cold-weather starting with this oil, I'm thinking about switching to a 229.5 spec oil, Mobil 1 0W-40. Presumably, this would give even better cold starting performance than the 5W-40, based on its SAE grade.

My preference for Mobil 1 is only because it's how I was raised, and I wouldn't presume to tell you that it's better than oils by other manufacturers that meet the same specs. Just like I wouldn't presume to tell you that my religion is better than yours.

Now, if you'll excuse me, I have to go find my asbestos underwear, before the flames start

Gurkha · #44 09-05-2009, 01:02 PM

Quote:

Originally Posted by erik

what about NA diesel like the 606.910? Delo/Delvac overkill (or is there no such thing as overkill when it comes to oil)?

Good oil is never overkill, Delo or Delvac Super will protect your turbo or n/a engine to extent only matched by expensive synthetics.

Oldwolf · #45 09-05-2009, 01:20 PM

Quote:

Originally Posted by 71inka02

Go with Valvoline Premium Blue Heavy Duty Diesel 15W40 - it's factory fill for Cummins, meets and exceeds everything you need...And in North Carolina, if your car is 'in tune' you'll have no starting issues in our cold weather...

This stuff is on sale now down at AutoZone...about $11 a gallon.