300SDL oil change interval on Rotella T5 - Page 3 - PeachParts Mercedes-Benz Forum

Diseasel300 · #31 05-22-2018, 11:38 AM

Quote:

Originally Posted by cmac2012

I'm going to try to change it at my nephew's house today. I'm at 5036 since the last change.

I appreciate the feedback, I get that this topic is often an area of some dispute and controversy.

I think that's a little paranoid. A single oil change that's gone a bit over the desired change interval won't do squat to the health of the engine. It's when you go well past the recommended change interval as a habit that appreciable damage and wear occurs, especially if all you do is short trips and stop/go traffic. Highway miles are WAY easier on an engine than city traffic.

cmac2012 · #32 05-22-2018, 01:13 PM

Good points. I've been waffling about changing it here since I posted that. I have a Blackstone jar at home I've been saving. I could see myself trying to get some home to transfer to that jar and something going wrong.

I estimate 3000 of those miles are freeway. I've been changing at 4K since I've had it.

cmac2012 · #33 05-23-2018, 09:20 AM

I couldn’t find the product Kent recommended for viscosity enhancement, Engine Oil Saver, Liqui - Moly, so I put in some STP instead. The thought being that pumping the viscosity back up a bit on this aging synthetic could be helpful.

OM617YOTA · #34 05-23-2018, 09:46 AM

You're really overthinking this. Change your oil when you get home, don't bother with any additives that may or may not be an improvement on the additive package designed by your oil's manufacturer. Going a few miles over on an oil change once is nothing.

Enjoy your time with your family.

Clemson88 · #35 05-23-2018, 10:10 AM

DeliveryValve · #36 05-23-2018, 02:07 PM

Definitely over thinking it. Just drive and worry less.

FWIW - I do minimal 5,000 miles on conventional (even running with veggie oil) and 8000 miles on synthetic on om617s. With the cam cover removed, they all have been very clean inside and compression has been very good.

.

Father Of Giants · #37 05-23-2018, 03:00 PM

Wow I missed an oil thread skirmish.

CDTurbo001 · #38 05-23-2018, 04:04 PM

Quote:

Originally Posted by cmac2012

I couldn’t find the product Kent recommended for viscosity enhancement, Engine Oil Saver, Liqui - Moly, so I put in some STP instead. The thought being that pumping the viscosity back up a bit on this aging synthetic could be helpful.

Wasn't necessary, but shouldn't do any harm. That syn blend 15w40 will stay plenty thick. The owner's manual viscosity table allows for 5w30 in sub-zero temps...

cmac2012 · #39 05-23-2018, 09:14 PM

The thought has occurred to me that I’m going into anal retentive territory on this. I’ll tell you what it is, I bought this car a bit long in the tooth, 303K, I am now at 326K and change, I don’t want to shop around for another one anytime soon.

I’ve heard from experienced hands that the OM603 is probably not the 500K workhorse that the OM617 is. And I’ve seen other opinion saying it’s inconclusive. So who knows, but I would like to get at least 500,000. The car is mostly nice, needs a bit of help perhaps.

Here I am in central Washington about 20 miles south of Canada, near Tonasket. My greater community has these hippie fairs up in the hills, we call them Barter Faires. Cash is OK as a medium of barter.

I showed up about midnight Friday, was tired, it was drizzling, I might have looked a bit sad setting up my tent. It had been a few years since I did it. The next morning I got up and apparently some righteous hippie chick put a cute little doll on my roof rack, perhaps to cheer me up. Worked. I put a small graphic message in its arms in case the gifter came by again. It was still there when I left so it's a nice souvenir. I'll give it to the right kid someday.

Junkman · #40 05-24-2018, 10:26 AM

I think Blackstone's recommendation was 11,000 mi on the Cummins. That engine takes 3 gal of oil which makes a change significantly more expensive than in a 617. Full synthetic lets the 617 start without plugging in here in mild TN winters.

marco5 · #41 05-24-2018, 03:17 PM

Oil changes are cheap, change it every 3-4kmiles or 7500km as the factory manual recommends. With the mileage, age, condition, it's best to even do it sooner due to the 'soot' in the oil. Do not stretch these out to 10,000km+, specifically the OM616/617 as it will cause damage to the rings over time. I follow 3 rules personally.

1) Change the oil before the factory recommended kilometers
2) Use German/OEM quality filters only, change the orings and check condition of the oil tube orings (2)
3) Use German higher grade 15W40 oil

MongooseGA · #42 05-27-2018, 03:44 PM

I run mine at 5k intervals.

Mainly because it's easier to count 5k intervals on my odometer than 3k. Also, if I did every 3k, I'd be changing oil constantly.

tjts1 · #43 05-27-2018, 03:50 PM

Quote:

Originally Posted by marco5

Oil changes are cheap, change it every 3-4kmiles or 7500km as the factory manual recommends. With the mileage, age, condition, it's best to even do it sooner due to the 'soot' in the oil. Do not stretch these out to 10,000km+, specifically the OM616/617 as it will cause damage to the rings over time. I follow 3 rules personally.

1) Change the oil before the factory recommended kilometers
2) Use German/OEM quality filters only, change the orings and check condition of the oil tube orings (2)
3) Use German higher grade 15W40 oil

As you've already been told repeatedly, you're spereading terrible advice. If you're that paranoid about oil change intervals, get an oil analysis done at 3000 miles. It's cheaper than an oil change and far more informative.

sloride · #44 05-27-2018, 04:56 PM

Maybe the question should be, whose 61X or 60X has died before 350K doing 7,500 mile OCIs due to sludge.

marco5 · #45 05-29-2018, 10:20 AM

Quote:

Originally Posted by tjts1

As you've already been told repeatedly, you're spereading terrible advice. If you're that paranoid about oil change intervals, get an oil analysis done at 3000 miles. It's cheaper than an oil change and far more informative.

https://www.youtube.com/watch?v=y4VqcghARzg

Sorry, videos and proof do not lie. Change it often (3-5k miles).