Come on it doesn't matter what oil you use as long as it's certified to use in your vehicle.My self I run Mobil 1 and change my oil every 3000 miles,I would change my oil every 3000 miles even with AmsOil.I don't trust any claim to "extended" run oils,nope don't believe in it no matter what.Run what ever darn oil you prefere and change it often and it'll run a long time.ASSSSSSSSSSS long as you don't run Penzoil!!!!!!!!!!!!!!!(or champion plugs ) This topic is like beating a dead horse that's been dead for years.

i dont really like horses, but they are better than dogs. never been woken up by the neighbor's horses.

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Well we can say it's like beating a dead dog but it won't sound rght .Than again..................................

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That’s why I love these threads. It challenges us to separate facts from myths. Amsoil, as tested time after time, has once again outperformed Mobil 1 in ALL 5 different areas which is documented in this link below. If you still think Mobil 1 is superior or even similar to Amsoil, then obviously you are in denial. I’m not saying that Mobil 1 is a bad oil, I would just change it every 2,500 miles if I were to use it in the Liberty. I’m just trying to clarify that there is a difference very worth noting. I sold my Tahoe with 247,000 miles on the original motor and transmission. I ran the Amsoil 0W-30 and changed the motor oil once a year. The recommendation is once a year or every 35,000 miles. I changed the Amsoil oil filter (The lowest efficient flow micron filter on the market) every six months as recommended by Amsoil. I had no problems with the motor, transmission, or transfer case/differentials while running Amsoil. And I wasn’t burning oil either. Jeep’s 3.7L is a very mechanical sound motor, there is no reason why we should not be able to log in over 500,000 miles if running Amsoil’s 0W-30 or 5W-30. The 5W-30 might appeal to those of you who like to change your oil more frequently. The recommendation is every 6 months or 7500 miles while using the Amsoil oil filter. It’s all about having the lowest wear scar, the best lubricant, and the most uniform oil on the market. Obviously, it’s your choice. My intentions is to help educate others on the misconceptions of oil. I suggest everyone to do an oil analysis just to see what is really happening inside your engine. There has been on several occasions testing that demonstrated that after 30,000 miles, Amsoil still tested as a better quality oil than other oils that were tested after running only 3,000 miles in the same engine. So obviously, the quality of oil does matter.

http://www.lubeoilsales.com/amsoil_vs_mobil1.htm

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2015 Ram Ecodiesel/Big Horn/4x4/Quad Cab
2016 Arctic Fox 22G/Onboard 2500 LP Cummins Onan Generator/160 Watt Solar Panel

I took the road less traveled. Now I'm LOST.

There’s a statement in the press release which offers a good indication of AMSOIL's technological lead. It refers to Mobil l’s upgrade in 1992. "The press release states that Mobil Corporation upgraded the Mobil 1 formulation in 1992 to incorporate synthetic jet engine oil technology," said Selbrede. "AMSOIL started out with jet engine oil technology from the very beginning in 1972." For those doing the math, that’s a 20-year lead.

In a press release dated April 14, 1999, Mobil Corporation announced its upgrade of Mobil 1 synthetic motor oil to Mobil 1 Tri-Synthetic Formula. The press release states, "New Mobil l Tri-Synthetic Formula combines three highly advanced synthetic polymers with an innovative anti-wear additive package developed by Mobil engineers and chemists." AMSOIL Technical Services Manager Byron Selbrede is not overwhelmingly impressed. "This is not earth shattering news," said Selbrede. "It sounds like things we have been doing for years." Selbrede says based on the press release, the new Mobil 1 Tri-Synthetic Formula offers nothing more than AMSOIL synthetic lubricants do, and quite a bit less. "We've moved beyond the multiple base stock technology. They're still playing catch-up with us."

AMSOIL INC. set out to examine the specifics of the overly broad “Nothing Outperforms...” Mobil claim. AMSOIL 5W-30 Synthetic Motor Oil (ASL) and Mobil 1 SuperSyn 5W-30 Motor Oil were analyzed in five key bench tests measuring motor oil performance: NOACK volatility, flash/fire point, pour point, four ball wear and total base number (TBN). AMSOIL outperformed Mobil 1 in all five areas.

Information taken from the following link: http://www.1st-in-synthetics.com/letters2.htm

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2015 Ram Ecodiesel/Big Horn/4x4/Quad Cab
2016 Arctic Fox 22G/Onboard 2500 LP Cummins Onan Generator/160 Watt Solar Panel

I took the road less traveled. Now I'm LOST.

Well I personally would never run 0w-30 oil in anything,to thin.I had a '75 Cutlass Supreme that had run the local co-op 10w-30 oil all it's life,at when I bought it it had 278,000 miles on it and I could still burn the rear tires for for 500 ft.I rebuilt the engine only for performace as I intended to drag race it,when I tore the engine down I didn't even have to bore the engine cause there was hardly any ridge in the the cylinders.Proving if you use the correct API certified oil and change it like you are supposed to(and upkeep the rest of the vehicle to) your vrhicle will run a long time.All my vehicles before my KJ ran nothing but co-op 10w-30 or 15w40 oil,it was free for me so that's what I used(tax deduction for my father) and all of my vehicles(execpt my '01 grand,traded it early) ran well over 150,000 miles with only 1 blowing the engine but that was due to busting a hole in the pan and running the engine out of oil.I understand about Amsoil but I still don't trust anything to be "extended" drain or whatever from personal experence.Also the availibilty of Amsoil is scarce so I run Mobil 1 which I can find at any parts store,gas station,or department store(wallmart,k-mart).

[quote I had a '75 Cutlass Supreme that had run the local co-op 10w-30 oil all it's life,at when I bought it it had 278,000 miles on it and I could still burn the rear tires for for 500 ft.I rebuilt the engine only for performace as I intended to drag race it,when I tore the engine down I didn't even have to bore the engine cause there was hardly any ridge in the the cylinders.Proving if you use the correct API certified oil and change it like you are supposed to(and upkeep the rest of the vehicle to) your vrhicle will run a long time.All my vehicles before my KJ ran nothing but co-op 10w-30 or 15w40 oil,it was free for me so that's what I used(tax deduction for my father) and all of my vehicles(execpt my '01 grand,traded it early) ran well over 150,000 miles with only 1 blowing the engine but that was due to busting a hole in the pan and running the engine out of oil.I understand about Amsoil but I still don't trust anything to be "extended" drain or whatever from personal experence.Also the availibilty of Amsoil is scarce so I run Mobil 1 which I can find at any parts store,gas station,or department store(wallmart,k-mart).[/quote]

As you can see, it has nothing to do with how thick or thin the oil is, it's about what it can do.
Series 2000 Synthetic 0W-30 Motor Oil (TSO)
Passenger car and light-truck engines today are built for fuel efficiency and power. AMSOIL Series 2000 Synthetic 0W-30 Motor Oil optimizes efficiency and power without the sacrifice in wear protection that comes with many fuel-efficient, low viscosity oils.

Testing shows AMSOIL Series 2000 Synthetic 0W-30 Motor Oil dramatically outperforms popular conventional and synthetic motor oils of typical viscosities in wear protection

Package sizes include:

1-Quart Bottle
1-Quart Bottles (case of 12)
1-Gallon Bottle
1-Gallon Bottles (case of 4)
30-Gallon Drum
55-Gallon Drum

AMSOIL Series 2000 Synthetic 0W-30 Motor Oil meets or exceeds the engine protection requirements of all domestic and foreign gasoline and diesel engines specifying the following:
API SM/CF, SL, SJ, SH...
ILSAC GF-4, GF-3...
ACEA A/5/B5
Chrysler MS-6395M
Ford WSS-M2C-913A/B
GM 4718M, 6094M
VW 502.00 (HTHS is 3.4)
DaimlerChrysler 229.5, 229.3
JASO VTW
Product Description

Passenger car and light-truck engines today are built for fuel efficiency and power. AMSOIL Series 2000 Synthetic 0W-30 Motor Oil optimizes efficiency and power without the sacrifice in wear protection that comes with many fuel-efficient, low-viscosity oils.

Testing shows AMSOIL Series 2000 Synthetic 0W-30 Motor Oil dramatically outperforms popular conventional and synthetic motor oils of much higher viscosity in wear protection. AMSOIL Series 2000 Synthetic 0W-30 Motor Oil efficiently transfers energy from the engine to the drivetrain. Its low coefficient of friction inhibits the energy loss to "drag" common to high viscosity oils.Motorists seeking the ultimate in fuel efficiency may use AMSOIL Series 2000 Synthetic 0W-30 Motor Oil in place of 5W-30 or 10W-30 motor oils.

High Temperature Protection

AMSOIL Series 2000 Synthetic 0W-30 Motor Oil protects in high temperatures better than the conventional and synthetic oils tested, regardless of viscosity (see chart). Even after extended service in the engine, Series 2000 Synthetic 0W-30 Motor Oil maintains its ability to protect in high temperatures.

Low Temperature Protection

AMSOIL Series 2000 Synthetic 0W-30 Motor Oil is specially formulated for superior cold temperature engine protection. Series 2000 retains excellent fluidity in extremely low temperatures, so it flows quickly and reliably to allow easy starting and immediate lubricating protection.

Motorists seeking cold temperature dependability and protection may use AMSOIL Series 2000 Synthetic 0W-30 Motor Oil in place of 5W-30 or 10W-30 motor oils.

Heat Stability

AMSOIL Series 2000 Synthetic 0W-30 Motor Oil is highly resistant to volatility. For example, in heat that causes conventional motor oils to lose as much as 25 percent of their mass, AMSOIL Series 2000 Synthetic 0W-30 Motor Oil loses less than ten percent.

AMSOIL Series 2000 Synthetic 0W-30 Motor Oil's resistance to volatility keeps oil consumption extremely low and, more importantly, keeps the engine thoroughly lubricated and protected. Its resistance to volatility also helps keep fuel efficiency high and emissions low.

Clean Engine Formula

AMSOIL Series 2000 Synthetic 0W-30 Motor Oil remains free of sludge, varnish and other by-products of high temperature degradation. With no deposits to foul them, engines stay cleaner longer for top performance and efficiency and maximum service life.

Shear Stability

AMSOIL Series 2000 Synthetic 0W-30 Motor Oil is highly shear-resistant. With AMSOIL Series 2000 Synthetic 0W-30 Motor Oil's excellent viscosity retention, the protection that goes into the engine is the protection that stays in the engine, even over an extended course of severe service.

MIXING AMSOIL

AMSOIL Series 2000 Synthetic 0W-30 Motor Oil may be mixed with petroleum-based oils or other synthetic oils. However, a mixture of AMSOIL Series 2000 Synthetic 0W-30 Motor Oil and another oil may offer a shorter service life than pure AMSOIL Series 2000 Synthetic 0W-30 Motor Oil does.

SERVICE LIFE
AMSOIL Series 2000 Synthetic 0W-30 Motor Oil is recommended for extended drain intervals in unmodified(1), mechanically sound(2) gasoline fueled vehicles as follows:

• Normal Service(3) – Up to 35,000 miles or one year, whichever comes first.

• Severe Service(4) – Up to 17,500 miles or one year, whichever comes first.

• Replace AMSOIL Ea oil filter at the time of oil change up to 25,000 miles or one year, whichever comes first (other brands at standard OEM* intervals).

• In all non-gasoline fueled vehicle applications, extend the oil change interval according to oil analysis or follow the OEM* drain interval.

*OEM – Original Equipment Manufacturer

(1) Engines operating under modified conditions are excluded from extended drain recommendations. Examples include the use of performance computer chips; non-OEM approved exhaust, fuel or air induction systems; and the use of fuels other than those recommended for normal operation by the manufacturer.

(2) Mechanically sound engines are in good working condition and do not, for example, leak oil or consume excessive amounts, are not worn out, do not overheat, do not leak anti-freeze and have properly working emission control systems. AMSOIL recommends repairing malfunctioning engines prior to the installation of AMSOIL synthetic oils.

(3) Personal vehicles frequently traveling greater than 10 miles (16 km) at a time and not operating under severe service.

(4) Turbo/supercharged vehicles, commercial or fleet vehicles, extensive engine idling, first and subsequent use of AMSOIL in vehicles with over 100,000 miles, daily short trip driving less than 10 miles (16 km), frequent towing, plowing, hauling or dusty condition driving.

AMSOIL Ea full-flow oil filters are designed for extended drain intervals. They stop smaller particles, flow more oil and last longer than regular filters. For best performance, use AMSOIL full-flow oil filters.

TYPICAL PHYSICAL PROPERTIES (revised 02/05)

AMSOIL Series 2000 Synthetic 0W-30 Motor Oil (TSO)

Kinematic Viscosity @ 100°C, cSt (ASTM D-445)
11.2

Kinematic Viscosity @ 40°C, cSt (ASTM D-445)
56.9

Viscosity Index (ASTM D-2270)
195

Cold Crank Simulator Apparent Viscosity @ -35°C, cP (ASTM D-5293)
5520

Borderline Pumping Temperature °C (°F) (ASTM D3829) -40 (-40)

Pour Point °C (°F) (ASTM D 92)
-54 (-65)

Flash Point °C (°F) (ASTM D 92)
226 (439)

Fire Point °C (°F) (ASTM D 92) 247 (477)

Noack Volatility (DIN 51581) 250°C for 1 hour, % weight loss 8.6

High Temperature/High Shear Viscosity cP, X°C, X s-1 (ASTM D4683) 3.4

Four-Ball Wear Test (ASTM D 4172: 40kgf, 150°C, 1800 rpm, 1 hr) Scar diameter, mm 0.39

Total Base Number
>11.0

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2015 Ram Ecodiesel/Big Horn/4x4/Quad Cab
2016 Arctic Fox 22G/Onboard 2500 LP Cummins Onan Generator/160 Watt Solar Panel

I took the road less traveled. Now I'm LOST.

Since the bickering, bit@#ing, fang bearing, etc. refuses to quit in a thread like this, I am just going down to my quickiemart and picking up 5 quarts of non detergent strait 30 weight oil. Just the most generic I can find. Then I am going to go 300,000 miles before my first change. Yep. That'll show everyone ....

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'06 3.7 sport 6 speed (long live manual tranny's)
tinted windows, cruise, midnight blue
Mopar roof rack
Royal Purple Synchromax in tranny
Royal Purple Maxgear in pumpkins
Full mopar skids, front diff collar
Future mods: Rock rails, B.F. Goodrich all terains. (In my dreams: Frankenlift)

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99 TJ
71 C101
04 KJ
03 SFA KJ Sport
LOST JEEPS So-Cal

Don’t look at this as bickering. Look at this as an opportunity to discuss ideas, share experiences, and provide a way to learn something new. This forum is filled with many different ideas and theories in which I have learned a lot from. This forum also allows both sides to freely and equally debate each idea, thought, and data. I don’t care what oil people use, I just like to share good information that others on this forum might not otherwise be aware of. I hope the best for everyone, regardless the different ideas.

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2015 Ram Ecodiesel/Big Horn/4x4/Quad Cab
2016 Arctic Fox 22G/Onboard 2500 LP Cummins Onan Generator/160 Watt Solar Panel

I took the road less traveled. Now I'm LOST.

Yeah I don't care what oil anyone uses(execpt Penzoil!) just I'm to set in my ways .I have nothing against Amsoil,I would run it if they sold it in the part stores.

Me too.. Ive been thinking about switching to Amsoil.. I really want to in the tranny when I put that shift kit in.

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LOST KJ'S
Where are you going???
Current Jeep: 2004 Jeep Liberty
-Atlantic Blue
-Air Ride Rear Suspension ; OME/Rustys Lift ; Powertrax Locker ; Moog Lower Ball-Joints ; 245/70/16 Yokohama Geolander A/T-S's on MOABS ; Flowmaster 50 SUV
Lost #007082
http://www.cardomain.com/id/jeepjeepster

I personally like the fact that I don't have to go to the parts store for Amsoil. When it is getting close to time for a fluid change of some sort, my lazy butt just orders the fluids, filters, etc. They are on my doorstep in a couple of days.

As far as whats better.. To me it is just a peace of mind thing, and I know Amsoil is FULL synthetic. The others can be debated. But I also agree if you use a quality oil and filter, change them at 3000 miles, (every time, all the time) your engine internals will last a very long time.

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TRADED 04' Renegade
Franken lift front/ Skyjacker rear
JBA uca's
245 Firestone Destinations

2015 Jeep Cherokee Trailhawk (stock)


2014 Yamaha FZ-09
1999 Yamaha VMax
LOSTKJs #124

Hey, speaking of switching to Amsoil during the aftermath of the shift kit install, I lost 7 and ¾ quarts of trany fluid. I added Amsoil to top it off. Of course I had to run to the dealership and have them check to see where my fluid level was. Oh, and for those who might want to order a Transmission dipstick for the newer Liberty’s, I have the part number and telephone number to order it. I’m going to give them a call tomorrow in hopes to have it ordered.

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2015 Ram Ecodiesel/Big Horn/4x4/Quad Cab
2016 Arctic Fox 22G/Onboard 2500 LP Cummins Onan Generator/160 Watt Solar Panel

I took the road less traveled. Now I'm LOST.

The UPS man and I are great friends. He visits me regularly!
Any time I can save by avoiding the crowded auto parts stores around here or keep my distance from Wally world is time for me to spend doing other, more productive things. I plan the work on my vehicles, order up all the goodies I need and they are on my step in a few days ready to go when I am. I don't have to worry about if they have what I need in stock or run from store to store. The UPS man just brings it to me.

I love not having to worry about a 3k mile or 3 month schedule. It leaves more time for my family, school, wheeling, working on my friends vehicles, etc. I have No worries about the quality of the lubricants I am using because I know that they always test better than any other on the market even in extended service intervals. Peace of mind.

But hey, whatever turns your crank, floats your boat, blows your skirt up, etc. is cool by me and as long as you are happy with how/what/where/when you do what you do then good for you and congrats. Peace.

Boy that was reaching a pretty high PC level huh?

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99 TJ
71 C101
04 KJ
03 SFA KJ Sport
LOST JEEPS So-Cal

Well one good reason I'd change my oil every 3000 miles is that it gives me a chance to check everything else out under the KJ and plan future mods .Plus I like working on my KJ,it's a good stress reliever for me.

I'm w/ you on the working on my Jeep deal. I spend a lot of time checking over my Jeeps and it is part of my ME time. My Jeeps all get a check up before and after every run. I also have a problem where I take stuff apart just for S's & G's. I will be doing that on the KJ before Moab just to verify everything looks good and then torque it all back to specs before the trip. Fun stuff.

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99 TJ
71 C101
04 KJ
03 SFA KJ Sport
LOST JEEPS So-Cal

I’ve always owned used vehicles in the past, so it has been strange to have two brand spanking new vehicles. There is very little maintenance and less inspections compared to my previous high mileage late model vehicles. But now I’m having fun planning the upgrades! Once we move back to New Mexico and build our home, I’m planning to build a nice workshop with a wood heat source, it will be my little haven nestled in the mountains. Our backyard (7,000 feet) is a National Forest, so you all will be invited to come out and hit some trails whenever you want with a free place to stay.

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2015 Ram Ecodiesel/Big Horn/4x4/Quad Cab
2016 Arctic Fox 22G/Onboard 2500 LP Cummins Onan Generator/160 Watt Solar Panel

I took the road less traveled. Now I'm LOST.

Sounnds sweet dieselenthusiast. Sounds like you finally hit the lottery!?!?

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'06 3.7 sport 6 speed (long live manual tranny's)
tinted windows, cruise, midnight blue
Mopar roof rack
Royal Purple Synchromax in tranny
Royal Purple Maxgear in pumpkins
Full mopar skids, front diff collar
Future mods: Rock rails, B.F. Goodrich all terains. (In my dreams: Frankenlift)