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 Post subject: Changing to synthetic
PostPosted: Sat Mar 29, 2008 7:23 pm 
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Just got my 06 KJ and will be changing the oils soon. I am considering Amsoill synthetic in the engine, transfer case, transmission and differentials. Will use the Jeep recommended grades. Any problems with the synthetics? It only has about 25,000 miles on it.


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PostPosted: Sat Mar 29, 2008 8:01 pm 
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No problems at all.

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 Post subject: Re: Changing to synthetic
PostPosted: Sun Mar 30, 2008 1:26 am 
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bobcat7 wrote:
Just got my 06 KJ and will be changing the oils soon. I am considering Amsoill synthetic in the engine, transfer case, transmission and differentials. Will use the Jeep recommended grades. Any problems with the synthetics? It only has about 25,000 miles on it.


Amsoil is the way to go, I would recommend the Amsoil 0W30 for your climate, it will be the most energy efficient, excellent for cold weather start-ups, and excellent film strength. Plus, if you are interested, you can go longer intervals with the 0W30.

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PostPosted: Sun Mar 30, 2008 4:10 pm 
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yeah ill agree go with the 0w30 Amsoil. your making a good choice in going over to synthetics :wink:

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PostPosted: Mon Mar 31, 2008 10:14 pm 
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I would have thought the 0W30 would be too light as we get up to 80 or 90 degrees for long periods in the summer?


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PostPosted: Tue Apr 01, 2008 1:02 am 
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bobcat7 wrote:
I would have thought the 0W30 would be too light as we get up to 80 or 90 degrees for long periods in the summer?


PRODUCT DESCRIPTION
AMSOIL Signature Series 0W-30 Synthetic Motor Oil is the industry benchmark in lubrication technology. Engineered with the world’s finest synthetic base oils and high performance additives, AMSOIL Signature Series 0W-30 is designed for those who demand the absolute best in motor oil performance. The exclusive “extended drain” formulation delivers superior engine protection and maximum fuel economy. AMSOIL Signature Series 0W-30 is a premium grade synthetic motor oil that exceeds the requirements of modern, high-performance engines and older engines. It replaces other 0W-30, 5W-30 and 10W-30 motor oils and consistently outperforms competitive conventional and synthetic motor oils.

AMSOIL, the leader in automotive synthetic lubrication, produced the world’s first API qualified synthetic motor oil in 1972. Trust the extensive experience of AMSOIL The First in Synthetics® to do the best job protecting your engine.

Extends Drain Intervals
AMSOIL Signature 0W-30 Synthetic Motor Oil lasts much longer in service than conventional oils. Its unique synthetic formulation and long drain additive system resist oxidation and neutralize the acids that shorten the service life of other oils. AMSOIL Signature Series 0W-30 delivers the best possible engine protection, cleanliness and performance over extended drain intervals, reducing vehicle maintenance and waste oil disposal costs.

Maximizes Fuel Efficiency
The lightweight molecular structure of AMSOIL Signature Series 0W-30 Synthetic Motor Oil reduces energy loss from the “drag” common to high viscosity oils. It is fortified with additives that enhance its friction-reducing properties to help further improve fuel efficiency.

Reduces Wear
AMSOIL Signature Series 0W-30 Synthetic Motor Oil contains specialized anti-wear technology. Its durable, high temperature film strength effectively separates metal surfaces to reduce wear even under the most grueling conditions. Tests prove that AMSOIL Signature Series 0W-30 provides better protection against wear than other motor oils (see graph). AMSOIL Signature Series 0W-30 helps engines last longer.

Resists Heat, Reduces Oil Consumption and Emissions
AMSOIL Signature Series 0W-30 Synthetic Motor Oil is thermally stable with a strong resistance to high temperature volatility (burn-off). It is heavily fortified with detergent and dispersant additives designed to prevent sludge deposits and keep engines clean. Low volatility and clean operation reduce oil consumption and emissions.

Provides Outstanding Cold Flow Properties
Unlike conventional oils, AMSOIL Signature Series 0W-30 contains no wax. Its exceptional -60°F cold flow properties ease starting and reduce bearing wear.

APPLICATIONS
AMSOIL Signature Series 0W-30 Synthetic Motor Oil is recommended for use in gasoline engines, diesel engines (API CF, ACEA B5) and other applications requiring SAE 0W-30, 5W-30 or 10W-30 with the following worldwide specifications:

• API SM/CF, SL, SJ …
• ILSAC GF-4, 3 …
• ACEA A5/B5-04
• GM 4718M, 6094M
• Ford WSS-M2C929-A
• Daimler Chrysler MS-6395N
• VW 503.00

Service Life
AMSOIL Signature Series 0W-30 Synthetic 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 (16km) at a time and not operating under severe service.

(4) Turbo or 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 (16km), 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 Ea full-flow oil filters.

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 Post subject:
PostPosted: Tue Apr 01, 2008 1:20 am 
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Is Amsoil saying I can go 30,000 miles between changes with 0W-30 under normal DD habits? Filter change at 15,000 then with a top off? what's everybody else doing that uses Amsoil?

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 Post subject:
PostPosted: Tue Apr 01, 2008 1:28 am 
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DryBones wrote:
Is Amsoil saying I can go 30,000 miles between changes with 0W-30 under normal DD habits? Filter change at 15,000 then with a top off? what's everybody else doing that uses Amsoil?


I will change oil in my KJ once a year in July. I've never driven 35,000 miles in one year on one vehicle. I had 247,000 miles on my 1995 Chevy Tahoe, V8 350, and ran the 0W30.

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PostPosted: Tue Apr 01, 2008 7:15 am 
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dang, I do about 30K a year soa change once a year instead of once a month would be real nice. maybe I will do the oil twcie a year and the filter 2 additional times. :?

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 Post subject:
PostPosted: Tue Apr 01, 2008 9:54 am 
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I use Amsoil 5W30 and I change it almost as often as regular oil. The only way I'd want to go longer is if I got a second filter on it. I know Amsoil can go longer periods between changes, but the engine is still aspirating small amounts of contaminants, even with a good air filter. (I change the air filters too often also). The KJ uses NAPA Gold oil filters (Wix).

I plan to keep the KJ, so to me it's worth it to maintain it well. Plus I love to work on it. 8)


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PostPosted: Tue Apr 01, 2008 11:24 am 
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snowsport wrote:
I use Amsoil 5W30 and I change it almost as often as regular oil. The only way I'd want to go longer is if I got a second filter on it. I know Amsoil can go longer periods between changes, but the engine is still aspirating small amounts of contaminants, even with a good air filter. (I change the air filters too often also). The KJ uses NAPA Gold oil filters (Wix).

I plan to keep the KJ, so to me it's worth it to maintain it well. Plus I love to work on it. 8)


Yep, I plan to do the same, I will keep my KJ forever! Friction and heat is what kills engines and transmissions, so overkill is the way to go if you want to take your KJ to 500,000 miles. Depending which 5W30 you are running, they are to be changed more often. Only the 5W30XL can be changed at 7,500 miles or six months. The 0W30 is the longer extended interval oil that can be changed at 35,000 miles or once a year. To confirm that my engine oil is doing what it’s suppose to do, I sometimes will do an oil analysis to see what‘s going on. However, I wont start doing an oil analysis on my KJ until I have at least 50,000 miles on her. I’ve been using the 0w30 for several years and I’ve seen the results, so I know the oil does what it says it does. I’ve never had to replace a transmission either, so I encourage everyone to run the Amsoil ATF. I never replaced the trany in my Tahoe and I pulled with it. 247,000 miles on the original motor and trany is pretty impressive for the abuse that I put it through. Oh, and the 4 wheel drive system worked flawlessly. I also run the Amsoil gear lube in the differentials, ATF in the power steering, and Amsoil’s brake fluid will be going in soon. I have a by-pass system in my truck, and I hope to be installing a by-pass in the KJ.

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 Post subject:
PostPosted: Thu Apr 03, 2008 9:27 am 
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There are no problems with synthetic, especially AMSOIL, and there are no problems with switching from regular to syntetic. ( in older cars or onesnwoth especially loose tolerances, there may be a little gasket leaking but Libby will definately not). Our fmily has been all-synthetic dr about 15 years, AMSOIL for 6-8 yrs. No problems, its the best stuff ever.

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