Old synthetic oil in my engine
#26
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e300d
Based on oil analysis that I have looked at on www.bobistheoilguy.com Mobil 1 is good for more then 1 year and over 10K miles.
That should not come as a surprise. However, as others noted, some mfrs do want the oil changed at 12 months, regardless of miles, to maintain warranty coverage...I don't know what MBUSA's position is on this. I guess you could ask.
One of my cars is driven only a few thousand miles per year. I've had the oil analyzed at 18mos (mostly out of curiosity) and the oil (TBN) was nowhere close to being depleted...there was nothing of concern in the report. In reality, I was dumping perfectly good oil.
Assuming one was running a compliant 229.xx oil, there are not likely to be any concerns going for 18 - 24 mos unless you're still under warranty.
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1987 SDL; 2001 Chevy 2500HD CC, 8.1L, Allison special order; 1970 GTO LS2, 4L60E, under construction
Amsoil is the finest synthetic oil on the planet, bar none, including MB's own. They say after a year, chuck it. That's all the proof I needed...
#28
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Goatman should disclose he is an amsoil dealer and has a vested interest everytime he promotes their (unaproved) products.
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03 E500 and Corvette
Based on oil analysis that I have looked at on www.bobistheoilguy.com Mobil 1 is good for more then 1 year and over 10K miles. I decided to go ahead and change mine at only 1500 miles with the oil 14 months old because it only cost me $60 on a car that cost $120K, figured the risk reward ratio was in my potential favor.
Correct.
From what I remember:
I have also read the blackstone test on LS1 motors used in Corvettes and Camaro's. The test ran 14,000 miles before any tested item went out of limits. Then as part of the test they changed the oil filter and added enough fresh oil to bring the level to full. A retest of the oil after the filter / oil added (engine had been run of course) showed all items in the oil back to acceptable levels. Prediction from the new level of contaminates indicated that it would be possible to make 20,000 total miles or more but at 20,000 the test ended.
#30
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2004 CLK 240
Older cars with paper filters may well have to change oil & filter more frequently, I concede...
#31
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I guess that M-B have amended the instructions in their OM over the years, as both engines and oils have made technical progress. I drive a 2004 CLK, and use a synthetic oil with a fleece filter, and use the basic 12K mile period - as adjusted by the car's computer for usage, etc.
Older cars with paper filters may well have to change oil & filter more frequently, I concede...
Older cars with paper filters may well have to change oil & filter more frequently, I concede...
I've tested mine at 16K (I drive lots of freeway miles) and M1 still tested out with better than 50% TBN left and less than .5% insolubles. Most other FSS owners seem to trip at 8-10k.
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1987 SDL; 2001 Chevy 2500HD CC, 8.1L, Allison special order; 1970 GTO LS2, 4L60E, under construction
25K miles or one year with the Amsoil. Nothing better out there for gas or diesel.
#34
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Amsoil also states one year then change... I do disagree with 25K miles on one oil change though, why take a chance with an expensive car . You do have to change the oil filter every 10k or so miles(less if it is not a high quality synthetic filter).
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1987 SDL; 2001 Chevy 2500HD CC, 8.1L, Allison special order; 1970 GTO LS2, 4L60E, under construction
There's no "chance" in it at all. Mobil 1 made a 15k mile oil and was marketing it heavily untill the OEM's told them to knock it off or lose their factory backing. Amsoil has repeatedly stated the Mobil 1 15K could go 25k under the right circumstances, but the OEM's would lose their minds. Imagine all those 3000 mile oil changes going away from the service department?
Amsoil has 25K filters for most autos now....
Been using it for years changing at 25K on my "fleet" of 3 domestic work trucks. Sold my 94' GMC Sonoma with 298K on it and still not burning any oil.
Amsoil has 25K filters for most autos now....
Been using it for years changing at 25K on my "fleet" of 3 domestic work trucks. Sold my 94' GMC Sonoma with 298K on it and still not burning any oil.
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1987 SDL; 2001 Chevy 2500HD CC, 8.1L, Allison special order; 1970 GTO LS2, 4L60E, under construction
BTW, I just sold the last of my "fleet" I'm selling this afternoon. My 94 Chevy C2500 extended cab. 240,000 miles, no oil burn, running like a top, worked HARD all its life. Got book value for it too. People hear Amsoil and know you gave it the best!
#39
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2008 E63, White/Black, P030
Mercedes says to replace Mobil 1 oil every 10k miles has many reasons, maybe some we could not think of.
To make more money.
Some drivers idle or drives their cars on very short stops and trips.
Some race their cars.
So Merc's recommendation is based pretty close to all the above.
To make more money.
Some drivers idle or drives their cars on very short stops and trips.
Some race their cars.
So Merc's recommendation is based pretty close to all the above.
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1987 SDL; 2001 Chevy 2500HD CC, 8.1L, Allison special order; 1970 GTO LS2, 4L60E, under construction
Short trips also leave some water in the oil, which isn't good sitting.
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2008 E63, White/Black, P030
Today I ask the Merc dealer what type of oil does my 08 E63 used. He said 5W40 Mobil 1. Then I ask another and said to use 040 Mobil 1 at $7.50 a quart. Which is correct?
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1987 SDL; 2001 Chevy 2500HD CC, 8.1L, Allison special order; 1970 GTO LS2, 4L60E, under construction
Either will work. In hot climates or under "hard" conditions, you'd want the 5 weight. Either way, a switch to Amsoil would do you good. The dealers recommend Mobile 1 because they get deals on it. For that kind of money, you could have a much, much better oil.
#44
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e300d
Both the 5W40 and 0W40 will have the same viscosity at operating temperature...they're both xW40 oils The 0W40 oil will have superior flow characteristics in extreme cold, think Canada.
The 5W40 product at the dealership is a one-off created by Mobil for MBz. It only meets 1 spec: 229.51. It's the oil that MUST be used in the newest diesels to protect the emissions system. You cannot buy this oil at Wallmert's, etc. I'm quite certain the M1 0W 40 (which meets 229.5) is suitable for your car. Verify in the booklet that came with the car.
#45
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e300d
Either will work. In hot climates or under "hard" conditions, you'd want the 5 weight.
The 0W40 and 5W40 have virtually identical viscosities at operating temperature. I thought you were an "expert" on oils.
The dealers recommend Mobile 1 because they get deals on it.
I think the real reason is that Mobile [SIC] created a unique formulation for the manufacturer
For that kind of money, you could have a much, much better oil.
The 0W40 and 5W40 have virtually identical viscosities at operating temperature. I thought you were an "expert" on oils.
The dealers recommend Mobile 1 because they get deals on it.
I think the real reason is that Mobile [SIC] created a unique formulation for the manufacturer
For that kind of money, you could have a much, much better oil.
#46
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1987 SDL; 2001 Chevy 2500HD CC, 8.1L, Allison special order; 1970 GTO LS2, 4L60E, under construction
If they were identical, they'd be identically named. I guarantee I know more about it than you do.
Yep, because they give all the OEM's deals...
Yep, because they give all the OEM's deals...
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2008 E63, White/Black, P030
Thanks for the replies guys. I looked at my manual and it says to ask the dealer. I just wan to make sure, because I'm planning to replace the oil only every 5000 miles and at oil and filter at 10000 miles, because I drive short trips often. All my other vehicles I replace my oil at 2500 miles and all of the engines are in top shapes. Maybe I'll ask several more dealers and see what they say.
#48
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Goat Pellets! Most Amsoil product lines aren't API certified; you only get their "good word" as a merchant they meet or exceed those certifications.
KV - I agree that you'll want a MB229.5 spec oil. There are lots to choose from. M1 is most avail in the US. Viscosity should always be determined based upon operating environment. Fairbanks at -40f will differ from Death Valley at 115f. In the last 12-13 yrs, most MB factory fills for Europe and No Amer have been either 0 or 5W/40.
KV - I agree that you'll want a MB229.5 spec oil. There are lots to choose from. M1 is most avail in the US. Viscosity should always be determined based upon operating environment. Fairbanks at -40f will differ from Death Valley at 115f. In the last 12-13 yrs, most MB factory fills for Europe and No Amer have been either 0 or 5W/40.
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1987 SDL; 2001 Chevy 2500HD CC, 8.1L, Allison special order; 1970 GTO LS2, 4L60E, under construction
All Amsoil motor oils meet or exceed all OEM standards, as they always have.
Same guy who said MB didn't have their own synthetic trans fluid ladies and gents. Awful sketchy...
Same guy who said MB didn't have their own synthetic trans fluid ladies and gents. Awful sketchy...
#50
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http://en.wikipedia.org/wiki/Amsoil
"Today AMSOIL, INC., markets the XL line of API certified synthetic motor oil [2] as well as many other oil formulations which, although not certified by API, are claimed by AMSOIL to meet or exceed current API requirements."