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JerryM
Dodge Dakota
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8/13/2007
13:27:03
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 Subject: Mobil 1 full synthetic oil
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Does anyone know if there is a reccomended time frequency for changing out Mobil 1 full synthetic oil.
I am coming up on 1 year since my last oil change. My 2000 4.7 liter is a pleasure vehicle, and I only put on about 2K miles in the last year.
Not sure if I need to change out the oil after say one year, or if it is OK to go longer.
Thanks!
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Shoe
GenIII
8/13/2007
14:26:41
| RE: Mobil 1 full synthetic oil
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If you are not putting more than 2k a year then I would not worry about it for awhile. Just make sure to keep an eye on it just to see if it is breaking down and getting really dark black or anything like that.
Finally... a V8. '01 Dodge Dakota RC, 4.7, 5-speed, 3.92 LSD. = R/T Killer.
well at least a stock one
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.boB
Dodge Dakota
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8/13/2007
16:36:31
| RE: Mobil 1 full synthetic oil
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Mobile recommends no more than 12 months between changes. However, I would probably use Shoe's advice.
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OBIO3
Dodge Dakota
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8/14/2007
12:53:31
| RE: Mobil 1 full synthetic oil
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I agree also. I use mobil l EP and change once a year. I average 7,000 per year and my oil is still nice and clean.
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Shoe
GenIII
8/14/2007
13:15:16
| RE: Mobil 1 full synthetic oil
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The only synthetic oil that I have ever used is Mobil 1. I know that it is expensive and I am not discrediting any other synthetic oil. I tell you though, this stuff is ten times better.
Finally... a V8. '01 Dodge Dakota RC, 4.7, 5-speed, 3.92 LSD. = R/T Killer.
well at least a stock one
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.boB
Dodge Dakota
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8/14/2007
15:11:34
| RE: Mobil 1 full synthetic oil
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"Ten times better". Pretty bold statement, and one not backed by any data.
Interestingly enough, some of the new M1 formulations may not be as good as you think it is. M1 used to be all PAO pure synthetic base stocks. It now appears that 5W-30 and 10W-30 is no longer PAO based. But "heavier" grades still are.
Some of the porsche racers are having problems with the new EP formulations. Not sure how that would translate to a water cooled truck engine (probably not at all).
Since I use 5W-30 in my truck, I switched to Quaker State full synthetic, at $1 a quart less. I use M1 15W-50 in my Harley, and Royal Purple 20W-50 in my street/track roadster.
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Shoe
GenIII
8/14/2007
20:11:23
| RE: Mobil 1 full synthetic oil
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Just an opinion. Not a fact.
Finally... a V8. '01 Dodge Dakota RC, 4.7, 5-speed, 3.92 LSD. = R/T Killer.
well at least a stock one
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Mr.Sleepy
Dodge Dakota
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8/14/2007
20:18:19
| RE: Mobil 1 full synthetic oil
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You know the old saying, 3000 miles or 3 months which ever comes first. Basically after sitting in the crank case for over 3 months, oil begins to become acidic, this can eat away at your engine. pushing your synthetic oil to 5 or 6 months would be alright, but I would recommend changing it at least 3 times a year regardless of use or the oil you use. The extra $30 you spend doing it an additional time, is truly a pittance compared to replacing engine parts. Safe than sorry. With synthetic blend, i've replaced mine every 3000 without failure, 120,000 miles later, it still runs like the day i bought it.
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Shoe
GenIII
8/14/2007
23:39:24
| RE: Mobil 1 full synthetic oil
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I am with you on that, but if somebody wants to push the limits more power to them.
Finally... a V8. '01 Dodge Dakota RC, 4.7, 5-speed, 3.92 LSD. = R/T Killer.
well at least a stock one
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.boB
Dodge Dakota
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8/15/2007
22:25:13
| RE: Mobil 1 full synthetic oil
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>> You know the old saying, 3000 miles or 3 months which ever comes first. Basically after sitting in the crank case for over 3 months, oil begins to become acidic, this can eat away at your engine. <<
A true statement.... in 1950.
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Mr.Sleepy
Dodge Dakota
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8/16/2007
17:56:01
| RE: Mobil 1 full synthetic oil
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You don't own a engine repair shop by any chance do ya bob?
Cause if you think its okay to save 60 bucks a year, and miss out on oil changes, then you are a shmuck.
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.boB
Dodge Dakota
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8/18/2007
19:52:14
| RE: Mobil 1 full synthetic oil
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Guess you haven't been keeping up on new technology.
The only ones recommending an oil change every 3K is the people who get paid to change oil. Factory owners manuals and oil makers don't. Heck, even Harley doesn't make that recommendation any more.
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N56629
Dodge Dakota
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8/18/2007
20:57:39
| RE: Mobil 1 full synthetic oil
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Mr.Sleepy may work for one of the oil change joints. He may still think that trucks should be using 10-40 oil inspite of current manufacturers recommendations.
Come on, Mr.Sleepy, wake up. Things have changed ofer the last fifty years. Engines don't run as dirty as they did fifty years ago when they recommended 3000 mile oil changes. Synthetic oils don't "contribute" to the acids found in the crankcase.
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rick38
Dodge Dakota
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8/19/2007
11:37:35
| RE: Mobil 1 full synthetic oil
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Ya, and on the back of a shampoo bottle it say, wash, rinse and repeat. it does not tell you when to stop either. Common sense and years of experience tell you to otherwise.
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TexasTodd
Dodge Dakota
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8/19/2007
11:41:41
|  RE: Mobil 1 full synthetic oil
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Bob,
Is Quaker State Full Synthetic,
REALLY Full Synthetic?
There are many other companies now stating their oil is full syn.
I'm not arguing with you at all. I'd really like to know, cause I may switch from Supersyn M1 also.
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.boB
Dodge Dakota
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8/19/2007
18:09:39
| RE: Mobil 1 full synthetic oil
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>> Is Quaker State Full Synthetic, REALLY Full Synthetic? <<
Yes, and No. It depends on your definition of synthetic. For the average person with a logical mind, a "synthetic" product is something man made, not a natural product modified to a certain point. So, IMO, it it starts out with a PAO base stock and there is no dinosaur juice added, it's synthetic.
But in the advertising game and the courtroom (where common sense and logic are blatently absent) it's another story. A group III oil that is modified enough to meet certain standards and charectoristics can be called "Synthetic", even though it starts out as dinosaur juice.
Of course, it's a big secret as to which is which.
M1 5W-30 and 10W-30 is NOT a PAO base stock synthetic. It starts out as dino juice. It seems that the other grades like 15W-50 are still PAO - for now. It's still a fine oil, and in most cases will work just fine. It's just not what you think it is. And, you're paying PAO prices for a group IV oil - which makes it far more expensive than it should be.
I don't believe QS is a true PAO base stock synthetic. But, I think it's a fine oil that will easily last 5,000 miles of heavy duty use. As far as I can tell, it's just as good as M1 in the lower grades/weights.
And it's $1/qt cheaper than M1. Doesn't sound like much, only $1. But how many qts of oil will you use in 50K miles? How many dollars is that? Yeah, not chicken feed. Why pay that much more money for a product that isn't any better (or worse)?
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dr
Dodge Dakota
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8/20/2007
06:27:17
| RE: Mobil 1 full synthetic oil
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M1 stopped making synthetic oil after hurricane katrina destroyed their plants. they realized the customers did not care what was in the bottle but what was just on the label. so now they sell dino juice and call it synthetic because it was processed twice. the company lies because it is cheaper and they make more profit.
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well
Dodge Dakota
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8/20/2007
22:15:40
| RE: Mobil 1 full synthetic oil
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"In 1994, Dr. John Woolum tested the viscosity of several 10w-40 oils in his motorcycle. He found that all of the petroleum oils had lost highly significant amounts of viscosity within 1500 miles. Only Mobil-1 held up in his test. I have personally tested Delvac-1 synthetic in my ST1300. It was 5w-40 when I put it in, and 5w-25 9,200 miles later. By 1500 miles, the petroleum oils Dr. Woolum tested were at 10w-25 equivalent. By contrast, Dr. Woolum tested a petroleum oil in his Honda Accord. After 3600 miles, the 10w-40 oil was 10w-37 equivalent. Motorcycles are indeed significantly harder on their oils than cars. Based on this result and the VI numbers above, it would seem that 10w-40, 5w-20, and 5w-30 oils cannot be safely used in motorcycles for more than 1,000 to 1,500 miles."
as quoted by Mark Lawrence.
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huh
Dodge Dakota
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8/21/2007
06:14:02
| RE: Mobil 1 full synthetic oil
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>> You know the old saying, 3000 miles or 3 months which ever comes first. Basically after sitting in the crank case for over 3 months, oil begins to become acidic, this can eat away at your engine. <<
A true statement.... in 1950.
,bob,
things have changed since 1950. wake up.
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3000 miles...
Dodge Dakota
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8/21/2007
13:40:11
| RE: Mobil 1 full synthetic oil
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That engine will be squeaky clean when you
tow that pile of rust to the junkyard in 20 years.
A good name brand synthetic oil twice a year, fall and spring, regardless of milage and
the engine will last as long as anything else on your truck.
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Wylman
Dodge Dakota
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9/06/2007
02:15:48
| RE: Mobil 1 full synthetic oil
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I quit using the Mobil1 sawhile back myself......5 maybe 6 years ago. I now use the Castrol Syntec and a Fram duo-guard (Teflon Additive) oil filter every 6000 miles or 6 months. Whichever comes first. My truck has 172,000 on it and the engine is still extremely clean and runs like a raped ape at the mud bog. I am consistently taking second place. Only being beat by an 87 jeep that has well over $30,000 invested in it.
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