Lighter weight oil for winter - Page 2 - PeachParts Mercedes-Benz Forum

compress ignite · #16 09-23-2008, 12:38 AM

Has all the Additives for your Flat Tappet valve train.(In fact more of the correct kind and quantity than ANY other oil)
(to answer your question , YES)

LOOK, OIL Is the ONE thing you should not **** around with.
The Refiners spend Kazillions in Blending the correct ratios of additives
You as a "Concerned" owner are "Playing With Fire" attempting to "Re-Engineer"
the Lubricants...AND we all know what happens to people who play with fire.

herring · #17 09-23-2008, 04:00 PM

Out of curiosity, I called the parts department at my nearby Benz dealer. I asked them if they had a recommendation for a winter oil for my car. Surprisingly, they said they just use a standard 10W40 oil year round for all models before those that specified synthetic.

cewyattjr · #18 09-23-2008, 04:13 PM

So, 10w40, as in any motor oil, like for gasoline engines? I had thought that diesel branded oil has special stuff in it to deal with soot? Would be great to just buy that stuff, as you can find it everywhere, but I'm suspicious.

-Chuck

mobetta · #19 09-23-2008, 04:21 PM

use only a diesel rated oil , especially with the older indirect injection engines.

do not take one person's word at a dealership. he may have mis-spoken, and meant a 15-40 diesel oil. are there any 10-40's rated for diesel?

herring · #20 09-23-2008, 04:23 PM

Quote:

Originally Posted by cewyattjr

So, 10w40, as in any motor oil, like for gasoline engines? I had thought that diesel branded oil has special stuff in it to deal with soot?

Ok, I called back and talked to the guy I usually talk to. The other guy was wrong, it's 15W40, such as Rotella. He said that's a fine oil to use, but he didn't have a recommendation for anything lighter weight, other than to maybe check out the major oil manufacturers' websites (like Mobil) and see if they had any such products.

herring · #21 09-23-2008, 04:25 PM

Quote:

Originally Posted by mobetta

are there any 10-40's rated for diesel?

Yep, that's this whole thread in a nutshell. It seems to me if I could get a 10W40 oil with the appropriate detergent/soot/ZDDP additives in it I'd be in for smoother starts this winter but there may not be any such thing made.

jt20 · #22 09-23-2008, 04:26 PM

www.pauldrayton.com\uploadfiles\merc\Service\W123\w123CD2\Program\Engine\617\01-030.pdf

Chad300tdt · #23 09-23-2008, 04:29 PM

Quote:

Originally Posted by jt20

www.pauldrayton.com\uploadfiles\merc\Service\W123\w123CD2\Program\Engine\617\01-030.pdf

That link isn't working for me. What is it?

jt20 · #24 09-23-2008, 04:32 PM

fsm for oil applications and temperatures

#25 09-23-2008, 04:33 PM

01-030 Removal and installation of engine (oil capacity)

That website is no longer active. jt20, clear your web browser caches.

Chad300tdt · #26 09-23-2008, 04:35 PM

Quote:

Originally Posted by jt20

fsm for oil applications and temperatures

I'll have to check it out in the complete paper set of those manuals that I recently acquired.

jt20 · #27 09-23-2008, 04:36 PM

maybe that

the footnote for 10w30:

SAE 5W-20 below

+ 10 OC
SAE 10W-30 in temperate zones all-year.

the footnote for 10w40 and 10w50:
3, All season oil

jt20 · #28 09-23-2008, 04:39 PM

Quote:

Originally Posted by ForcedInduction

01-030 Removal and installation of engine (oil capacity)

That website is no longer active. jt20, clear your web browser caches.

thanks Fi

I downloaded the whole site.. I didnt realize

Alastair · #29 09-23-2008, 04:50 PM

Quote:

Originally Posted by herring

Where I live it's not easy to plug in my block heater. Starting my car last winter when it got down in the 20s wasn't easy, and the valves were properly adjusted. One of the things I'm thinking about doing is putting lighter weight oil in for the cold months. I currently have Rotella 15W40 (dino) in it. I don't want to use synthetic oil as the car already has a tendency to drip, I'm afraid it would be a fountain with synthetic oil.

So, I want to lower the first number (15), but there are no diesel-rated oils lower than 15 except synthetic.

I've thought of 2 things:
1. A good 10W40 gasser oil (Castrol GTX) with some expensive ZDDP additive (zddplus). This still wouldn't have much in the way of detergents or soot control, though.
2. A 50-50 blend of 15W40 Rotella and some 0W30 gasser oil. This would be a 7.5W35 mixture, and would still contain half the diesel agents (ZDDP, detergents, soot control).

Which do you think would be better for the engine (which will probably only go 2,500 miles between this oil change and the next one in spring)?

Temps in the 20's isnt particularly cold, you shouldn't have problems starting.

I doubt a change of oil will dramatically help matters....

When was the last time the Injection Timing was checked...?

As things wear (particularly chain etc.) the timing will retard. Retarded timing on any diesel will make it reluctant to start, according to how far its become retarded.

Along with a Valve-Job and timing-chain check for stretch, (which at 300K miles will be quite evident) an Injection Pump Timing check/adjust will work wonders.
Also worth remembering is the Injectors themselves do not last forever and maybe worth thinking about re-conditioning/replacing these too....

whunter · #30 09-23-2008, 04:58 PM

I run Mobile1 20/W50 in the summer.

Winter I run 0/W40 Mobile1.

It cranks so fast that I start on glow plugs with no block heater to -20F.

Have a great day.