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What is the best oil/filter to use?
They are not mandating the types of lubricants (yet). But they are demanding higher fleet fuel mileage and every tiny bit helps - like lower viscosity motor oils and lighter differential oil. If high heat is a real concern I would use 10W30 in summer. 10W is "thinner" in the summer...- Hockeygoon
- Post #71
- Forum: KJ General Discussion
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What is the best oil/filter to use?
Agreed. Wal-Mart Supertech is a pretty good oil - keeps my 60 year old tractor running 8-15 hours a day with over 5000 hours on the current overhaul. In its case thicker is probably better 10W40 year around.- Hockeygoon
- Post #69
- Forum: KJ General Discussion
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What is the best oil/filter to use?
Depends on how tight your engine is. I don't think they tightened up the tolerences on the 3.7 or 4.7 when the switch was made from 5W30 to 5W20. If anything with the length of production at that point the internal tolerances were probably growing as the machinery producing the blocks...- Hockeygoon
- Post #65
- Forum: KJ General Discussion
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What is the best oil/filter to use?
Agreed - but dirty is still dirty. If your oil is black at 3000 miles I damn sure wouldn't wait until 8000 miles to change it. The oil should still be translucent and slightly brown when changed. When you wipe the oil on your finger you should still be able to see your skin through the oil...- Hockeygoon
- Post #54
- Forum: KJ General Discussion
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Engine vibrations
I installed a new long block in my 2005 Liberty Sport. With a cold start up there seem to be extra vibrations from the engine - no misfires, maybe a slight roughness in sound (???) but a noticeable vibration that can be felt through the entire vehicle. After its been running a few minutes it...- Hockeygoon
- Thread
- Replies: 3
- Forum: KJ General Discussion
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What is the best oil/filter to use?
What engine is that? Looks a lot like the inside of the 3.7 I was sold as a running replacement with 145-150 psi compression on each sylinder as checked by their mechanics. Turned out that the rocker arms were also broke off on one cylinder - I wonder how that cylinder was tested. Pulled hte...- Hockeygoon
- Post #44
- Forum: KJ General Discussion
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What is the best oil/filter to use?
Given the sludge issues these engines have I would be reluctant to leave any kind of oil in them for more than 4000 miles.- Hockeygoon
- Post #14
- Forum: KJ General Discussion
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What is the best oil/filter to use?
I also run Castrol GTX 5W30 with a Motorcraft FL400 filter. Wix is probably a better filter but with oil changes every 3000 miles I'm not as concerned as I would be with extended mileage oil changes.- Hockeygoon
- Post #9
- Forum: KJ General Discussion
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High mileage club
Just turned 85,000 on a 2005 Liberty. Only on its third engine.- Hockeygoon
- Post #340
- Forum: KJ General Discussion
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04 renegade transfer case leaking where the case splits
Considering its not pressurized a good cleaning and some duct tape will fix it right up........- Hockeygoon
- Post #3
- Forum: KJ General Discussion
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Ac issue
Stupid question time. If you replace the condensor (and probably the air dryer) once its bolted together can you just refill with the WalMart A/C recharge? Arctic Freeze Ready-To-Use Arctic Freeze Kit (California Only) - Walmart.com- Hockeygoon
- Post #14
- Forum: KJ General Discussion
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#6 missfire and rough Idle
A bad valve can cause a miss but I doubt it would go away when you turn on the AC and would most likely get worse. Did they do any diagnostics on the injectors? I say this because the engine throttles up when the AC compressor kicks on - and your miss goes away. A partially clogged...- Hockeygoon
- Post #10
- Forum: KJ General Discussion
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oil leak, between engine oil pan and transmisson pan
I don't know why you guys think a Dodge product will only leak oil from one spot at time.- Hockeygoon
- Post #17
- Forum: KJ General Discussion
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Jeep Liberty Reliability - how does it compare?
Wrong. I've replaced 3 on my 2005 with less than 85,000 miles. Before this I handn't replaced one in my life.- Hockeygoon
- Post #124
- Forum: KJ General Discussion
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Differences in Mopar radiator model numbers?
The radiator for an automatic has a small oil cooler for transmission - the manual will not have the oil cooler. So yes - there is a difference and its probably reflected in the pricing.- Hockeygoon
- Post #3
- Forum: KJ General Discussion
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Ball joint replacement cost?
Lots of stuff causes wobble - could be ball joints, tie rod ends, it could even be your uneven tires causing the wobble.- Hockeygoon
- Post #2
- Forum: KJ General Discussion
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Idle & misfire Question check engine light
Drive to autozone and have them pull the codes so you know what is going on instead of the lot telling you what they think is going on. If you have a question about the codes post them here. How many miles? Any idea when the plugs were last changed? Brand and number on the plugs?- Hockeygoon
- Post #2
- Forum: KJ General Discussion
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Engine upgrades?
Not to mention the work the transfer case, drive shafts and axles will need. More than a few fail on a regular basis with just the stock HP of the 3.7 being fed to them - imagine what 300HP will do to them - especially if you use it.- Hockeygoon
- Post #26
- Forum: KJ General Discussion
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engine knock can't locate
See my post about metal in oil. If you are not seeing metal when you change the oil you might try these guys: Blackstone Labs Most likely it is a rod bearing (or all the bearings) - after some research I've found this very basic part of the engine has proven too difficult for the engineers...- Hockeygoon
- Post #9
- Forum: KJ General Discussion
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2005 Liberty 3.7 - metal in oil
That's it - except the engine shows no signs of having been run low on oil. Except for the rod bearings the engine looked like an engine with 85,000 miles, a little carbon on the pistons, timing chains were in very good condition the stories I've heard about them, no sludge anywhere and the...- Hockeygoon
- Post #10
- Forum: KJ General Discussion
