oil weight & MPG

Jun 19, 2008 | 02:01 PM

SEC1939

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From: Barrington IL

2015 E 250, 1999 BMW M Roadster, 1939 International Harvester, 2023 GLC

oil weight & MPG

Had oil change in my 2005 CDI, Guy put in Mobil 1 15-40 weight. Wish he had put in 0-30 or 5-30 w. Wondering if anyone has experience on oil weight & MPG? I would expect a lower MPG when the engine is cold with the higher weight. Any comments ?

Jun 19, 2008 | 02:16 PM

Diesel Benz

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From: Europe

223.168 & 213.012 & 906.633 & 214.005

Quote:

Originally Posted by SEC1939

15W should be high but more importantly, I doubt this would fulfil the MB requirements. Did you see the MB rating?

It should probably be 229.5 for your car (229.51 for diesels with particle filter).

http://www.whnet.com/4x4/oil.html

Last edited by Diesel Benz; Jun 19, 2008 at 02:18 PM.

Jun 19, 2008 | 02:31 PM

SEC1939

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From: Barrington IL

2015 E 250, 1999 BMW M Roadster, 1939 International Harvester, 2023 GLC

oil

I know they put in mobile 1 but I am not sure if it meets the spec. Any thoughts? I thought about bringing my own oil but he said he has what I needed.

I would do it myself but the deisel oil is like ink, no jack stand positions, ramps I have are a bit low

Jun 19, 2008 | 04:19 PM

Untertürkheim

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Quote:

Originally Posted by SEC1939

There is no Mobil 1 15-40 weight, there are 0, 5, 10 -40 weights, and 15w-50, at least in the US.

Jun 19, 2008 | 04:34 PM

SEC1939

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From: Barrington IL

2015 E 250, 1999 BMW M Roadster, 1939 International Harvester, 2023 GLC

oil

looking closer at the paperwork they wrote 15-50 syntec

Jun 19, 2008 | 04:40 PM

Untertürkheim

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Quote:

Originally Posted by SEC1939

looking closer at the paperwork they wrote 15-50 syntec

That oil is not approved for your car. Time to find a shop that has some clue as to what they are doing.

Jun 19, 2008 | 05:13 PM

E55 PWR

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e55

The only oil that will drastically improve MPG is Royal Purple, everything else is snake oil by comparison. I've gotten on avg 2-3mpg from doing engine & diff with RP on multiple different benzes.

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Jun 19, 2008 | 06:31 PM

Untertürkheim

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Quote:

Originally Posted by SEC1939

manual shows a 15-50 w

A 2005 Mercedes requires 229.5 or 229.51 spec oil, Mobil 1 15w-50 does not meet either of these specifications.

Jun 19, 2008 | 09:08 PM

#10

FWhite

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2012 S350 Bluetec

I have had very good luck with Elf Excellium 0W-30 in my 06 CDI. It meets MB page 229.5 specs and is approved MB. My milage increased about 2 mpg over Mobil 1 5W-40.

Make sure the oil you use specificly meets 229.5 or you are on your own as far as Mercedes is concerned.

Jun 19, 2008 | 09:21 PM

#11

nikon

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From: NEW YORK

E 63 AMG S

Quote:

Originally Posted by E55 PWR

The only oil that will drastically improve MPG is Royal Purple, everything else is snake oil by comparison. I've gotten on avg 2-3mpg from doing engine & diff with RP on multiple different benzes.

+1 Hands down the best oil in the industry.

Jun 19, 2008 | 10:14 PM

#12

FWhite

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2012 S350 Bluetec

I'm sure Royal Purple is very good oil but it is not approved by Mercedes.
http://www.whnet.com/4x4/oil.html

Jun 20, 2008 | 08:46 AM

#13

SEC1939

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From: Barrington IL

2015 E 250, 1999 BMW M Roadster, 1939 International Harvester, 2023 GLC

Elf Excellium 0W-30 sounds like the ticket. I will have them change the oil. Very interesting information. much appreciated

Jun 20, 2008 | 09:19 AM

#14

SEC1939

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From: Barrington IL

2015 E 250, 1999 BMW M Roadster, 1939 International Harvester, 2023 GLC

how about Castrol Syntec 0-30w looks like it meets their 229.5 according to the web site?

Where do you find the elf products? Mail order ?

Thanks
Steve

Jun 20, 2008 | 09:27 AM

#15

FWhite

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2012 S350 Bluetec

You should note that Elf has changed its company name and is now Total. The new name for the oil is Total Quartz Energy 9000 0W-30. I have ordered Elf and the last time they shipped Total. It's the same stuff. The container is marked MB229.5.

Jun 20, 2008 | 04:33 PM

#16

SEC1939

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From: Barrington IL

2015 E 250, 1999 BMW M Roadster, 1939 International Harvester, 2023 GLC

shop stepped up and changed the oil to the elf product 0-30w as suggested. I think it already made a difference in my MPG's Appreciate all the advice

Steve