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2001 E320 wagon
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Discussion Starter #1
just got back the blackstone oil report on the latest oil change. it was Mobil 1 and following the FSS the car went 20K miles from the last change. had to add 5 quarts but the last quart was about 1K miles before the change - so around 4K miles per quart for use. Running mobil 1 0w40 and the Mann fleece filter.
Oil analysis looks excellent. I also change air filters every 25K miles - keeps the silicone contamination down.
cheers
Barri
 

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99 E430, 01 E430 Sport, 00 SL500
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3,266 Posts
Has anyone ever sent them some fresh oil to see the "virgin" numbers?
 

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E320/E250 Bluetec Ford F350 6.7l
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Virgin oil will have pretty close the same numbers beside first 6 positions that show metal wear.
Good report. No need to replace air filters that often. I installed a gauge on my filter and so far after 100,000 miles on it, it is still in green zone.
 

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2001 E320 wagon
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Discussion Starter #5 (Edited)
here is voa of mobil1 0w40. Mobil 1 0W40 SN VOA - Bob Is The Oil Guy

judging from the used oil analysis, i think you are safe to go 30k miles.
Thanks for posting the virgin oil sample.
for an explanation of the results go to the below and hit gasoline - diesel
Blackstone Labs

You are right, apart from the low magnesium - used as a dispersant and detergent the oil is still in remarkable good condition and I could probably have gone further. When I added the 5th quart at around 19K miles the FSS after a few days had pushed the oil change out to just over 21000 miles but I had already decided to change oil at 20k miles.
It could quite probably gone out to around 25 to 30K miles especially if I had needed to add a 6th quart sometime in the middle which would have bolstered the additive packages.

I should add that I use shell rotella 5w40 T6 synthetic diesel oil in my landrover (it is one of the few diesel oils certified for gasoline engine use) as it still has a flat tappet engine and i need the higher zddp package in the diesel oil.

I probably could go further on the air filter too but I drive on a lot of dirt forestry and farm roads and once you start to build up too much dust the silicone counts in the oil go up along with the wear. The mercedes filter (I use Mann) may be better than the landrover filter (although its also Mann) and on that one i noticed after 40K the silican levels increased significantly in the oil even though I change it every 10K on average.
I know that sounds wrong but if you leave the same air filter and change the oil as recommended but leave in the same air filter then even with an oil change at 10K miles on both the air filter and the oil shows low silica but the 5th oil change at 50K miles with the same air filter as original shows very increased levels of silica to the point of showing increased engine wear.
I have ringed the silicone and as they say in the written report this wear may be due to abrasion wear from dirt contamination from a not clean enough air filter.
for the $20 I would rather change at 25K miles although I may well be wrong on that - I feel better about it :D
cheers
Barri
 

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1997 E320, 1997 S320
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25k miles seems like a good interval if you drive in farm and country roads. the air filter gets dirty very quick in country roads.
i use rotella too in the e320, but the dino one (15w40 and 10w30). would like to use a synthetic like m1 0w40 in it, but used to have a tiny leak from timing cover that would get worse with synthetic so i have stuck with rotella t. at 260k miles the engine is as smooth as the one in my s320 with 3x less miles and doesn't burn any oil at all.
 

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E320/E250 Bluetec Ford F350 6.7l
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I think you have a leak in your air filtration. My filter after 80k miles shows silicon at 6 with oil change after 14.3 k miles.
I am not sure if diesel and gasser have the same filters, but they look alike.
 

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1999 E55, 2001 E320, 1990 560 SEC, 2004 ML350, 2001 ML55, 1995 S500, 1998 SL500, 2010 E550 Sport zoo
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Replace 5 "lost" qts in 20K miles - or replace 60% of the capacity - then propose extending the service interval - precious - I love it !

I might setup a controled drip tap in the pan and a matching drip-drip-drip tap for the new oil - and map replacement the fluid flow - I love it !
 

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2001 SLK 320(217K Miles), 2002 E320 Special Edition(183K Miles)
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I think the most important part that people seem to miss is that this shows that FSS is working! It did take into consideration that new oil was added and extended the service interval accordingly.
Regarding the 5 quarts added, I do not think it excessive. It all depends on how you drive. Push any engine a bit and it will use some oil. I find the same on my SLK320. I've got about the same oil consumption figures, since I take it to the red line about every day and regularly go 90/100 MPH. On the other hand, if you only putter around town or never exceed 3000 RPM, you will probably not use any oil.
 

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99 E430, 01 E430 Sport, 00 SL500
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I used regular 10w40 oil, replaced every 4K miles, and never had to add any oil in between oil changes.
 

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I've done about 18000 since last putting the same oil in...though I have not had to top it up at all. Interesting analysis.
 

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2001 SLK 320(217K Miles), 2002 E320 Special Edition(183K Miles)
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I used regular 10w40 oil, replaced every 4K miles, and never had to add any oil in between oil changes.
So you will use 40 quarts of oil versus his 13 quarts! Man, the oil sheiks must love you. :eek::D
 

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99 E430, 01 E430 Sport, 00 SL500
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To Abu Dhabi, I'm a poor peanut. Oil change is easy but most important maintenance of all. Oil is also cheap. My labor is free. I'm slave to my cars. I've been doing the same thing for all of them, domestic and foreign, since the day owning one. I don't care if people see me crawling under a $55K car to do oil change, hey, it's my MB, no one oil changes it but me like clock work, 4K miles, change!
 

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2001 SLK 320(217K Miles), 2002 E320 Special Edition(183K Miles)
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99 E430, 01 E430 Sport, 00 SL500
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But enough poor peanuts and it ends up being a money printing press.
fyi, the same amount of money is printed in either case.
Proof:
>>So you will use 40 quarts of oil versus his 13 quarts!
>>Man, the oil sheiks must love you

The following calculations are based on regular price of oils.
My 40 qts of the conventional 10W40, at $2.99/qt, 40x$2.99 = $119.66
His 13 qts of Mobil 1 0W40 synthetic, at $8.99/qt, 13x$8.99 = $116.87
With sale prices, the results are about the same, too.

http://www.oreillyauto.com/site/c/search/0W-40/N1186/C0252.oap?keyword=mobil+1+oil
 

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2001 SLK 320(217K Miles), 2002 E320 Special Edition(183K Miles)
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fyi, the same amount of money is printed in either case.
Proof:
>>So you will use 40 quarts of oil versus his 13 quarts!
>>Man, the oil sheiks must love you

The following calculations are based on regular price of oils.
My 40 qts of the conventional 10W40, at $2.99/qt, 40x$2.99 = $119.66
His 13 qts of Mobil 1 0W40 synthetic, at $8.99/qt, 13x$8.99 = $116.87
With sale prices, the results are about the same, too.

List: Full Synthetic - 0W-40 | O'Reilly Auto Parts
But they don't get the retail price! They just get x dollars/barrel. So his 13 quarts requires less raw oil = less barrels = lower dependence on imports.
 

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99 E430, 01 E430 Sport, 00 SL500
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The retail figures proved one way that the same money was spent for either case.
Now, read the following carefully.
1. The fuel consumed in 20K miles took much more crude oil than 13qt/40 qts of oil. Assuming mpg is 20. 20K miles took 1,000 gallons or 4,000 quarts.
2. Car that burns oil (FSS schedule) is less efficient than car that does not burn oil (4K-mile oil change schedule).

Effectively, the sheik might get more money from an "oil burning" car than from a car that does not burn oil.
 

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2001 E320 wagon
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Discussion Starter #20
I think the most important part that people seem to miss is that this shows that FSS is working! It did take into consideration that new oil was added and extended the service interval accordingly.
Regarding the 5 quarts added, I do not think it excessive. It all depends on how you drive. Push any engine a bit and it will use some oil. I find the same on my SLK320. I've got about the same oil consumption figures, since I take it to the red line about every day and regularly go 90/100 MPH. On the other hand, if you only putter around town or never exceed 3000 RPM, you will probably not use any oil.

I'm very happy with the results and the FSS certainly seems to work as it should, although I doubt that I will keep going past the 20k miles mark as I dont think the filter can handle much more than that. Just got back from a fast fully loaded run to Boise and burned about half a quart (500ml), generally around town, as you say, I don't burn anything.
The blackstone report does look good though :D
cheers
Barri
 
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