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Old 01-27-2005, 02:46 PM   #1
O Stylee
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Default 15,000 mile Mobil 1

Has anyone else seen that new mobile 1 oil that is guaranteed to last all the way up to 15,000 miles? I need to do an oil change pretty soon, and the most i would probably feel comfortable lasting is like 8,000 miles or something like that...just wondering if anyone else is gonna try it or have heard about it.
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Old 01-27-2005, 03:45 PM   #2
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I use mobil 1 but still change it out every 5,000 miles
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Old 01-27-2005, 03:55 PM   #3
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.....
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Old 01-27-2005, 04:21 PM   #4
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Usually the manufacturer recommends when to change the oil - synthetic or not. I know my dad had a small mercedes that used synthetic and he only had to change it once every 13000 miles or something close.
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Old 01-27-2005, 04:30 PM   #5
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Subaru Stars Sycth vs. Dino-

This is an age old dilemma, but most long-term mechanics will tell you to change the oil 3-5000 miles regardless of the composition. Even though the viscosity will last longer in synthetics, it still gets metal shavings and coke, and as you can easily see turns black and thick after around 1500 miles or so.
I assume this new synthetic you speak of will not break down until around 15,000 but I wouldn't run it that long...
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Old 01-27-2005, 04:35 PM   #6
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The oil will last for 15k miles; I have no doubt. The problem is that the filter needs to be replaced long before that, every 4k or 5k I would say.
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Old 01-27-2005, 04:57 PM   #7
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I use Mobil 1 and I still do filter and oil changes every 3500 miles. Good lube is good
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Old 01-27-2005, 04:58 PM   #8
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The other thing is the combustion by-products are rather acidic and the detergents in your oil will only last so long - which is generally not as long as the viscosity. I've been told that these acids can harm aluminum so I use Mobil 1 but still change it every 3750 mi or so.
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Old 01-27-2005, 05:29 PM   #9
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Old 01-27-2005, 05:50 PM   #10
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i pray to god its good for up to 15k because i just poured it out of my truck at 14,780mi.

for i have done a great sin, car gods forgive me, i shall never do that to the blessed scooby...


by the way, it looked like TAR and had 5 metal shavings in it about.... well about too damn big to come from the inside of my engine.

don't do it! i vote 7,000 mi MAX! (mobile 1 full synth)

and when you get an oil filter, screw being brand concious, be fact concious. higher the pass-through efficiency the better. example: i work at advance auto, our brand of filter has a 94% first pass efficiency, costs $1.68. the K&N "performance" filter has a 90% first pass efficiency and costs at least 5 times as much.
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Old 01-27-2005, 06:06 PM   #11
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regular~3000
synthetic~5000

it's all the stuff got in the oil rather than the oil itself that worries me.
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Old 02-15-2005, 09:38 PM   #12
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This threads been dead a few weeks, but I just wanted to chime in after having seen this new oil on the shelves.

From what I've seen they've introduced "Mobil Clean 5000" (Dino), "Mobil Clean 7500" (Synth Blend) and "Mobil 1 Extended Performance" (Full Synth). It looked like M1XP was $5/qt at WalMart, only $1/qt more than M1. It's not much more expensive than M1, but considering I can find Redline for $6.50/qt in town, I'm not sure M1XP would be useful for me - assuming I wanted to move to an more extended ODI.
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Old 02-15-2005, 10:45 PM   #13
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3000 miles is a joke, thats from all these jiffy lube places trying to get you to change it more often so that they can make more money!

My dads M5, runs BMW (castrol synthetic) and it has a onboard system of green lights that start with 5 lights and eventually run down to one yellow, thus telling him he needs an oil change, this occurs every 12-15K or so. The vette's, 996TT, and many other cars are all this way. Changing synthetic every 5K or so is ridiculous!

Id run Redline before I ran Mobil 1, they suggest 7-12K miles!
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Old 02-16-2005, 01:26 AM   #14
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Quote:
Originally Posted by rickeolis
This is an age old dilemma, but most long-term mechanics will tell you to change the oil 3-5000 miles regardless of the composition. Even though the viscosity will last longer in synthetics, it still gets metal shavings and coke, and as you can easily see turns black and thick after around 1500 miles or so.
I assume this new synthetic you speak of will not break down until around 15,000 but I wouldn't run it that long...
Mechanics generally don't know **** about oil.

All oil gets metals in it from engine wear and other undesirable substances, though I have no idea why you'd get coke in there unless youre snorting off the air intake . The color of the oil has nothing to do with whether or not it is 'good' anymore. Some oils turn black quickly, some not so quickly. That does not effect the performance of the oil at all. In some cases it may just mean the dirt is suspended in your oil and not sluged up in your engine. Or it may be certain additives that just turn he oil black.

The viscosity may thicken after 1000-2000 miles, but generally oil shears down over a 3000+ OCI: a 30w, such as the board favorite, Mobil 1 5/30, will probably shear down to a 20w over 3000-5000 miles. Some makers oils are more shear resistant, such as Castrol.

This extended drain Mobil will have the base oils and additives to stand up to the extended interval. If anyone knows how to do it, Mobil does. I wouldn't be surprised if the existance of BITOG and other enthusiast websites spurred Mobil to create these long OCI oils.
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Old 02-16-2005, 07:11 AM   #15
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A couple of years ago, Consumer Reports did a huge study on oil and oil drain intervals. It was their most expensive test in their history. They installed identical engines in a bunch of NY taxi cabs. Three data points were gathered for each variation (oil brand, oil weight, drain interval) They measured and weighed engine parts before and after.

Their conclusion. No differences could be found between any oils, synthetic or conventional. They could find no difference between drain intervals of 5000 miles or 15,000 miles.

Granted, the WRX's turbo engine could stress an oil more, and turning an engine on and off can reduce your oil life, but the message is clear - the days of 3,000 mile oil changes exist only in the mind of Jiffy Lube fanchise owners. I consider 5,000 miles the new standard for overkill on oil changes.
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Old 02-16-2005, 09:57 AM   #16
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interesting.....this is the first i've heard of m1xp
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Old 02-16-2005, 10:04 AM   #17
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Quote:
A couple of years ago, Consumer Reports did a huge study
Did you see the follow up study they did with well-engineered, tight tolerance, high specifc output, turbocharged engines designed in the last quarter century?

Neither did I.
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Old 02-16-2005, 10:43 AM   #18
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5K may be perfectly safe, but I still like the way my car feels (just in my head?) after an oil change, so I shoot for 3-3.5K
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Old 02-16-2005, 10:47 AM   #19
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If you like changing at 3k intervals, buy a cheaper oil. Walmarts house brand synthetic, a Grp III oil, would perform admirably and costs $12 gallon. It is called SuperTech, I think.
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Old 02-16-2005, 10:48 AM   #20
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Also Motorcraft 5/30 is a synthetic blend. It is the best deal in oil at $1.30 quart.
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Old 02-16-2005, 12:43 PM   #21
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Quote:
Originally Posted by Jon Bogert
Did you see the follow up study they did with well-engineered, tight tolerance, high specifc output, turbocharged engines designed in the last quarter century?

Neither did I.
Did you see any study of any kind showing a benefit to changing synthetic oil at 3000 miles for any engine of any kind? Niether did I.
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Old 02-16-2005, 01:01 PM   #22
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I have a great idea for those of you who like to buy Mobil 1, use it for 1/3 of its life and toss it because it 'feels good':

Buy this new Mobil 15000 oil and drain it at 4000 miles. You oughta feel REALLY good then!!!1!
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Old 02-16-2005, 01:43 PM   #23
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Point is--CR is a datapoint for dishwashers, not high performance engines. So why even bring it up when there are so many substantive differences between NYC taxis and our cars?

With the obsession on this forum of people using low HTHS 5W30 oil because they couldn't read past the first line in that section of the manual, encouraging longer drain intervals is foolish.

Those people who are running good quality synthetic and who have done the research, know the relative degree of safety with which they can stretch the drain intervals. The new Mobil1 15000 may well fit into that category.

To the thread starter--definitely send in a sample to Blackstone. The proof is in the testing.
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Old 02-16-2005, 02:50 PM   #24
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I use mobil 1 10w-30, i changed my oil 2500 miles, its all about how hard you run the Biatch
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Old 02-16-2005, 02:55 PM   #25
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I usually change at 7500miles

here is a analysis that i just had done in dec with 8361miles on the oil:
http://forums.nasioc.com/forums/show...t=oil+analysis

going to wait until ~9000miles and send it in

i'm also running a VF30

Last edited by Quack; 02-16-2005 at 03:03 PM.
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