LOST JEEPS :: View topic - oil changes/3000-5000-10000

I am not too sure about the oil change myth.

I bought a 2000 mazda protege new when I worked at dell doing field repairs. I drove the hell out of that car.

I traded it in when it hit 145K and it still ran awsome.
Now to the point. This car had only a HALF OF AN OIL CHANGE!
I will explain:

When I hit 100K that weekend my dad changed his oil from his truck and I drained my oil and put in his old oil. and proceeded to drive another 45k with out any problems.

The car drove and ran like it was new. I am not too sure what happend after I traded it in. HaHa but it ran 145K with a half oil change......and same factory plugs :lol:

Jeep Dawg, maybe that car was like one I bought from a buddy of mine, he's really bad about maintenance, bought this Olds from him to run around in while I doing the "big" lift on my van, car had 130,000 on it and oil changed once, I ran the snot out of it, keep it around for a while for a bar to bar car, sold it at 145,000, another guy bought it and ran it to 183,000 the last time I saw it, then I moved from the area, I think it was so gummed up inside that it just kept going. :roll:

For the last twenty years I have been using Mobile 1 changing filter every 3 to 3500 and complete oil change every 6 to 6500 , in that time have ran every vehicle up into the 150,000 to 200,000 mark and no problems. Also that has been on 3 Ford pickups, 1 GMC pickup and 4 Cherokees, and now the Liberty at 105,000

What is the effect on warrantee if you routinely exceed manufactures specifications (even with synthetic)?

Say all you want but my oil and filter get changed every 3000 miles no matter what,done a oil change at a interstate rest area once cause I hit the 3000 mile mark there.

No oil filter is any good after 3000 miles,don't care what test's says it is,it's wrong,cut open the best oil filters after 3000 miles and you will be amazed at all the junk inside of it.Changing the filter at 3000 miles,heck might as well drop the other 4 1/2 qts of oil and add new oil with a fresh additive package to keep your engine running in good condition.Additive packages and oil viscosities wear out after time,if you change the oil when that happens you are to late.

Also you got to remember that oil,dino or synthetic,has a self life.

Yeah, oil engineers and the filter mfg's are in cahoots...you can't trust those guys about what they say about oil and filters lasting past 3k miles, after all, there job is to sell you filters and oil.......oh wait

....hmmm..... maybe they Do know what they are talking about then???

JJsKJ wrote:

....hmmm..... maybe they Do know what they are talking about then???

Yeah maybe :?:

Real life driving and controlled lab tests are 2 different things.

Author:	03kjsport [ Tue Jun 17, 2008 11:27 am ]
Post subject:	oil changes/3000-5000-10000
The 3,000 Mile Oil Change MythBy Bill Siuru, Greencar.com provided by: According to a recent study by the California Integrated Waste Management Board, 73 percent of California drivers change their oil more frequently than required. This same scenario no doubt repeats itself across the country. Besides wasting money, this translates into unnecessary consumption of $100-a-barrel oil, much of it imported. Using 2005 data, the Board estimates that Californians alone generate about 153.5 million gallons of waste oil annually, of which only about 60 percent is recycled. Used motor oil poses the greatest environmental risk of all automotive fluids because it is insoluble, persistent, and contains heavy metal and toxic chemicals. One gallon of used oil can foul the taste of one million gallons of water. MORE AT Greencar.com » 5 Easy Ways to Cut Your Gas Bill » Will A Hybrid Car Really Pay Off? » Article provided by GreenCar.com It’s been a misconception for years that engine oil should be changed every 3000 miles, even though most auto manufacturers now recommend oil changes at 5,000, 7,000, or even 10,000 mile intervals under normal driving conditions. Greatly improved oils, including synthetic oils, coupled with better engines mean longer spans between oil changes without harming an engine. The 3000 mile interval is a carryover from days when engines used single-grade, non-detergent oils. For several years, automakers like General Motors, BMW, and Mercedes-Benz have installed computerized systems that alert drivers via an instrument panel light when it’s time to change oil. As an example, the General Motor Oil Life System (GMOLS) analyzes the engine temperature, rpms, vehicle speeds, and other driving conditions to calculate the rate of engine oil degradation. Then, software calculates when the oil needs to be changed. Other systems work similarly. Because of the many external conditions and parameters that have to be taken into account, calculating the precise maximum service interval using mathematical models alone is difficult. Now, Daimler AG has developed a more direct and precise way to monitor oil quality directly on board a vehicle. Daimler uses a special sensor integrated into the oil circuit to monitor engine oil directly. Oil doesn’t wear out, but rather dirt and impurities cause oil to lose its ability to lubricate properly, dictating the need for a change. Daimler uses the oil’s “permittivity,” that is, the ability to polarize in response to the electric field. If the engine oil is contaminated by water or soot particles, it polarizes to a greater extent and its permittivity increases. To evaluate the quality of the oil, permittivity is measured by applying an AC potential between the interior and exterior pipes of an oil-filled sensor to determine how well the oil transmits the applied electric field. Because not all impurities can be measured with sufficient precision via the electric field method, Daimler also measures the oil’s viscosity to detect any fuel that may have seeped into the oil. Daimler researchers measure viscosity while the vehicle is in motion by observing the oil's side-to-side motion in the oil sump. The slower the oil moves, the higher its viscosity. This movement is registered by a sensor and the viscosity is calculated on this basis. A single sensor, along with the information already monitored by on-board computers, is sufficient to determine the various parameters of the engine oil. Daimler will likely use the technology first on its commercial vehicles. Here, large oil reservoirs mean larger quantities of oil can be saved. Plus, a predicted 25 percent increase between service intervals and reduced downtime will be of interest to fleets, and thus justify the added cost of installation.

Author:	sleeve84028 [ Tue Jun 17, 2008 12:22 pm ]
Post subject:
I've been changing my oil every 3000 miles for as long as I've been driving. I do understand this to be excessive but I'd rather pay the $30.00 in cost up front than worry about the extra wear and tear on my engines vital interal parts. Fresh oil is a key to engine longevity.

Author:	Jeep Dawg [ Tue Jun 17, 2008 12:28 pm ]
Post subject:
With the amount of driving I do daily and 90% highway miles, I change mine every 5K

Author:	JJsTJ [ Tue Jun 17, 2008 12:37 pm ]
Post subject:
One oil change a year on my 4 vehicles or 15K miles (rarely hit 15K in a year and only on one vehicle). UOA showed it still fine for use but I change it anyway. Good filtration of the incoming air and of the oil is key to helping it stay usable longer. Why waste $$, good oil and my time.

Author:	SavageUrge [ Tue Jun 17, 2008 12:38 pm ]
Post subject:
Don't waste your money. Fresh oil (Mobil 1 Full Syn) every 6,000 miles and a new filter (Purolator Pure One) every 3,000. You engine will last forever on this schedule as long as you perform all other necessary maintenance schedules.

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Author:	Jeep Dawg [ Tue Jun 17, 2008 12:51 pm ]
Post subject:
I am not too sure about the oil change myth. I bought a 2000 mazda protege new when I worked at dell doing field repairs. I drove the hell out of that car. I traded it in when it hit 145K and it still ran awsome. Now to the point. This car had only a HALF OF AN OIL CHANGE! I will explain: When I hit 100K that weekend my dad changed his oil from his truck and I drained my oil and put in his old oil. and proceeded to drive another 45k with out any problems. The car drove and ran like it was new. I am not too sure what happend after I traded it in. HaHa but it ran 145K with a half oil change......and same factory plugs

Author:	Pote [ Tue Jun 17, 2008 1:25 pm ]
Post subject:
Jeep Dawg wrote: I am not too sure about the oil change myth. I bought a 2000 mazda protege new when I worked at dell doing field repairs. I drove the hell out of that car. I traded it in when it hit 145K and it still ran awsome. Now to the point. This car had only a HALF OF AN OIL CHANGE! I will explain: When I hit 100K that weekend my dad changed his oil from his truck and I drained my oil and put in his old oil. and proceeded to drive another 45k with out any problems. The car drove and ran like it was new. I am not too sure what happend after I traded it in. HaHa but it ran 145K with a half oil change......and same factory plugs I change my synthetic oil at the same time I do my tire rotations...every 5000 miles, give or take 500 miles (leaning towards 6000)

Author:	tommudd [ Tue Jun 17, 2008 1:34 pm ]
Post subject:
Jeep Dawg, maybe that car was like one I bought from a buddy of mine, he's really bad about maintenance, bought this Olds from him to run around in while I doing the "big" lift on my van, car had 130,000 on it and oil changed once, I ran the snot out of it, keep it around for a while for a bar to bar car, sold it at 145,000, another guy bought it and ran it to 183,000 the last time I saw it, then I moved from the area, I think it was so gummed up inside that it just kept going. For the last twenty years I have been using Mobile 1 changing filter every 3 to 3500 and complete oil change every 6 to 6500 , in that time have ran every vehicle up into the 150,000 to 200,000 mark and no problems. Also that has been on 3 Ford pickups, 1 GMC pickup and 4 Cherokees, and now the Liberty at 105,000

Author:	Jeep Dawg [ Tue Jun 17, 2008 1:38 pm ]
Post subject:
tommudd wrote: Jeep Dawg, maybe that car was like one I bought from a buddy of mine, he's really bad about maintenance, bought this Olds from him to run around in while I doing the "big" lift on my van, car had 130,000 on it and oil changed once, I ran the snot out of it, keep it around for a while for a bar to bar car, sold it at 145,000, another guy bought it and ran it to 183,000 the last time I saw it, then I moved from the area, I think it was so gummed up inside that it just kept going. For the last twenty years I have been using Mobile 1 changing filter every 3 to 3500 and complete oil change every 6 to 6500 , in that time have ran every vehicle up into the 150,000 to 200,000 mark and no problems. Also that has been on 3 Ford pickups, 1 GMC pickup and 4 Cherokees, and now the Liberty at 105,000 Tommudd: LOL I am sure that was the reason why mine ran so good. I can say, I NEVER HAD ANY OIL LEAK! LOL

Author:	LostEddie [ Tue Jun 17, 2008 1:43 pm ]
Post subject:
What is the effect on warrantee if you routinely exceed manufactures specifications (even with synthetic)?

Author:	Cobalt-60 [ Tue Jun 17, 2008 2:01 pm ]
Post subject:
LostEddie wrote: What is the effect on warrantee if you routinely exceed manufactures specifications (even with synthetic)? If you actually look at Schedule A maintenance schedule (supposed to be for everything except taxi cab, emergency vehicle, and dedicated off-road use [Schedule B]) for the 3.6L KJ, the interval is 6,000 miles. Chrysler always claims that most vehicles operate under conditions for Schedule B (see above) which is every 3,000 miles, but we all know this is certifiably ridiculous. I follow Schedule A and use a full synthetic.

Author:	tjkj2002 [ Tue Jun 17, 2008 2:28 pm ]
Post subject:
Say all you want but my oil and filter get changed every 3000 miles no matter what,done a oil change at a interstate rest area once cause I hit the 3000 mile mark there. No oil filter is any good after 3000 miles,don't care what test's says it is,it's wrong,cut open the best oil filters after 3000 miles and you will be amazed at all the junk inside of it.Changing the filter at 3000 miles,heck might as well drop the other 4 1/2 qts of oil and add new oil with a fresh additive package to keep your engine running in good condition.Additive packages and oil viscosities wear out after time,if you change the oil when that happens you are to late. Also you got to remember that oil,dino or synthetic,has a self life.

Author:	Jeep Dawg [ Tue Jun 17, 2008 2:53 pm ]
Post subject:
tjkj2002 wrote: Say all you want but my oil and filter get changed every 3000 miles no matter what,done a oil change at a interstate rest area once cause I hit the 3000 mile mark there. No oil filter is any good after 3000 miles,don't care what test's says it is,it's wrong,cut open the best oil filters after 3000 miles and you will be amazed at all the junk inside of it.Changing the filter at 3000 miles,heck might as well drop the other 4 1/2 qts of oil and add new oil with a fresh additive package to keep your engine running in good condition.Additive packages and oil viscosities wear out after time,if you change the oil when that happens you are to late. Also you got to remember that oil,dino or synthetic,has a self life. YEA, what he said! With my KJ i change oil very often. I do the 5k change insted of the 3k

Author:	JJsTJ [ Tue Jun 17, 2008 3:02 pm ]
Post subject:
Yeah, oil engineers and the filter mfg's are in cahoots...you can't trust those guys about what they say about oil and filters lasting past 3k miles, after all, there job is to sell you filters and oil.......oh wait ....hmmm..... maybe they Do know what they are talking about then???

Author:	snowsport [ Tue Jun 17, 2008 7:26 pm ]
Post subject:
There's a lot of variables involved with this. Driving habits, air temperature, dust, frequency of driving, etc. I like changing oil in my KJ, that's a big factor for me. I look forward to crawling under there and getting all grubbed up, and knowing my KJ is getting fresh oil and filter to run on. This KJ uses only Amsoil, and I change it right at 5k kilometers (3k miles). Well, I've never pulled off the highway to do it (that's dedication!) but give or take a hundred klicks or so. I also know guys who don't do maintenance and get away with it somehow. Personally don't think that's any way to treat $30k + worth of equipment, but each to their own!!!

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Author:	Pote [ Tue Jun 17, 2008 3:10 pm ]
Post subject:
JJsKJ wrote: Yeah, oil engineers and the filter mfg's are in cahoots...you can't trust those guys about what they say about oil and filters lasting past 3k miles, after all, there job is to sell you filters and oil.......oh wait ....hmmm..... maybe they Do know what they are talking about then??? heresy!!! turn in your credentials!!!! LOL

Author:	tjkj2002 [ Tue Jun 17, 2008 3:19 pm ]
Post subject:
JJsKJ wrote: Yeah, oil engineers and the filter mfg's are in cahoots...you can't trust those guys about what they say about oil and filters lasting past 3k miles, after all, there job is to sell you filters and oil.......oh wait ....hmmm..... maybe they Do know what they are talking about then??? Yeah maybe Real life driving and controlled lab tests are 2 different things.

Author:	sleeve84028 [ Tue Jun 17, 2008 3:30 pm ]
Post subject:
Won't there always be people who believe one method works better than another? You'll always have people that never change the oil and then you'll have people that say change the oil every 3 months. On our Sebring, if we don't change the oil on a routine schedule, the motor will sludge up and ruin the internals. Regardless of the oil brand - the JR 2.7L runs very hot and kills oil. There will always be people that have differing opinions on this. In the end, do what ever makes you feel good about your car.

Author:	JJsTJ [ Tue Jun 17, 2008 3:33 pm ]
Post subject:
tjkj2002 wrote: JJsKJ wrote: Yeah, oil engineers and the filter mfg's are in cahoots...you can't trust those guys about what they say about oil and filters lasting past 3k miles, after all, there job is to sell you filters and oil.......oh wait ....hmmm..... maybe they Do know what they are talking about then??? Yeah maybe Real life driving and controlled lab tests are 2 different things. Yes but lab tests ON vehicles subjected to real world driving is what I'm talking about. Unless You are testing Your oil and filters on a regular basis, what do you have to go by except a warm fuzzy feeling that You are doing the right thing? IMO any less than 5k intervals is a waste of time & money w/ Full synthetics and good filters.