4.7 liter engine sludge - DodgeTalk : Dodge Car Forums, Dodge Truck Forums and Ram Forums
 
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#1 Old 01-24-2011, 03:50 AM
hellonwheels5
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4.7 liter engine sludge

Ok here is a topic anyone with a 4.7 liter engine ought to be interested in. On Carcomplaints.com there are 31 complaints about 2002 Dodge Ram 1500 4.7 liter engines experiencing complete engine failure due to sludge build up. From what I have seen on that website, the 4.7 liter engine is a 286 cubic inch engine and because of its compact design, and towing capacity it tends to generate high heat which in turn forms sludge. Most of these problems have resulted around 100,000 miles. I bought a 2002 1500 sport.. fortunately mine had a remanned engine installed in it at the dealership. I want to avoid this problem by any means necessary.
So my question to everyone is this.
1) What is the best kind of motor oil to use which would best combat sludge formation and deposits in the 4.7 magnum?

2) If sludge is already present or if you buy the vehicle used, what can you do to get rid of it?

Thanks for the pointers look forward to seeing what everyones thoughts are.
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#2 Old 01-24-2011, 06:14 AM
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I had a 2001 Dakota with the 4.7. Traded it in with 147k miles on it, never had an issue. I used Castrol GTX in it, every 3,000 miles. Its not really so much a sludge, as it more of a foam. The only time I ever saw any sludge/foam was in the oil filler tube, but nothing major.


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#3 Old 01-24-2011, 07:12 AM
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Would using sea foam get rid of all of the build up?

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#4 Old 01-24-2011, 07:26 AM
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I think you're probably making more of an issue out of this than it is. My 4.7 on my old 2002 Dakota ran like a dream from the get go. Performing routine maintenance is all that should be needed. Think about how many of those engines went out in vehicles and compare that to the number of complaints... sounds more like poor maintenance to me.

There is a common foam-like issue in the oil filler tube when the engine isn't allowed to get up to operating temp frequently, but the issue is from condensation in the filler tube and is not a sign of engine issues.

Perform regular maintenance, use the oil you like and drive the truck. You will be fine...

Mike


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#5 Old 01-24-2011, 09:14 AM
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Keep up with the maintenance schedule and do the occasional sea foam treatment. When I ran conventional oil, I had a lot of sludge/moisture issues noticeable at the fill cap, but since I switched to synthetic oil and did a sea foam treatment it's been spotless. And that's over 50,000 miles ago. I'm at 105,000 miles right now.

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#6 Old 01-24-2011, 11:18 AM
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Bought my '04 Ram 4.7 in '08 with 70k on the clock. While learning more about the truck I'd just bought, I started running across various "4.7 sludge" articles and wondered if I'd made a mistake.
I did a bunch of online research including www.bobistheoilguy.com and got a product called Auto-RX www.auto-rx.com .
Did it do any good? I dunno. Did I have any problem to begin with? I dunno.
I am careful to change the oil & filter regularly and use quality products; Castrol & Wix. I sorta suspect that many who had sludged engines didn't do proper maintenance or did alot of short trip driving that didn't allow the engine to reach regular operating temp. (Wouldn't hurt to check your thermostat's working properly).
After reading about so many 4.7 Rams, Dakotas & Durangos with 150k+ I really don't worry about it much anymore.
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#7 Old 01-24-2011, 11:32 AM
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Well, thats good to know.. I use pennzoil 5 or 10 30 or Valvoline synpower 5 or 10 30.. usually go with a a fram extra guard oil filter.. Change it religiously between 4,500 and 5,000 miles. Now I know this may be a longshot.. however it seems when I use synpower the gas mileage gets better. Has anyone ever heard of that?
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#8 Old 01-24-2011, 12:02 PM
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I run cheap 10w30 in my 4.7 dak. Other then the filler tube getting milky sludge shit in it, the rest of the oil is clean whenever I change it. Oh and my truck is at 160,000 miles roughly.

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#9 Old 01-24-2011, 12:16 PM
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You might also check out filter reviews; http://minimopar.knizefamily.net/oilfilters/index.html

http://minimopar.knizefamily.net/oil.../opinions.html

They're not so crazy about most of the Fram filters.

Or google "fram filter problems"

Just my .02’
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#10 Old 01-24-2011, 12:19 PM
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If your worried about this issue, this is what i have always done & NEVER had an issue. I have always run full synthetic, but every so often I still do it in my vehicles. Get a couple cases of cheap dino oil of your choice & at least 2 cheap oil filters. Drain the oil out as completely as you can & change the filter afterwards. Fill to full. Add 1 qt of Kerosene. Let idle for 20 min in driveway. Drain again as completely as possible then change filter again. Fill 2nd time with cheap oil & filter. Drive around for 30-60 minutes. Drain again & change filter. Refill with your choice of synthetic & quality filter. By doing this, you can get a good idea of what the inside of engine is like.

I just did this to our 2004 Corolla that i have had since new. It now has 120,000 miles on it. I have run full synthetic since brand new & change at 5000 mi. The clean oil & filter that i put in & added the Kerosene to came out pitch black in just 20 min. I may do it again at next oil change to see what comes out, IDK.

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What, you ask, is the difference between a Dodge Ram and a PowerWagon ?? PW frame part # 55398868AC---Reg 2500 #55398813AC
About 2" taller, 12,000lb winch w/mounting brace between framerails,electronic disconnecting swaybar(for awsome articulation),electronic locking axles front & rear(for true 4-wheel drive),tow pkg, fully skidplated,forged one piece Alcoa rims w/internal beadlock lips,larger diameter(one ton) axleshaft in rear,160 amp alt,HD battery,4.56 gears,low range electronic recalibration of gas pedal sensitivity,more but thinner leafs in rear spring pack(for better articulation), 33" BFG All-Terrain tires. 78.016:1 crawl ratio. All for $6100.00 more! Oh yeah, almost forgot-Bilstein shocks. Gear ratios: 1st 6.29:1 2nd 3.48:1 3rd 2.10:1 4th 1.38:1 5th 1.0:1 6th .79:1.. Rev 5.74:1.
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#11 Old 01-24-2011, 02:27 PM
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There are several possible causes of sludge.

2004 Dodge Ram 1500 4x4 5.7 Hemi SLT 197k miles
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#12 Old 01-24-2011, 11:25 PM
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What comes to my mind is:

Crap oil
too long between oil changes
overheating the oil

08' PowerWagon w/6-speed manual G-56. 05' 30' toyhauler camper.(10,500lbs)
Hellwig LoadPro 35 bolt on 4 leaf helper springs.
No honey, I'm NOT done buying shit for the truck yet !!!
PurpleCrainium Diff Guards
K&N air filter --- WeatherGuard 20" black bed toolbox.
winch TPC bypass
Dual battery set up w/2 Sears DieHard Platinums-Gp 65 under hood-Gp 31 Marine deep cycle in bed toolbox w/plug-n-play set up. Custom 2000/4000w inverter set up w/quick connect. Triple bike mounts above the bed- custom made by me.
Crapload of recovery gear-always subject to adding more.
Fab Four rear bumper. Soon to be- a BuckStop Baja front bumper.--Temporarily on hold, see reason below.
Installed: Borgeson #000951 steering shaft. PSC steering brace(notched for PW by Rusty-thanks bud). Carli HD CroMo adjustable track bar. Carli CroMo control arms. Carli HD upper & lower balljoints x 2 sets (replaced under warrenty) & triple sealed u-joints in front axle shafts & rear driveshaft. Moog HD tierod ends x 4. Running total is now $4800. Yup, now i'm broke !!!


What, you ask, is the difference between a Dodge Ram and a PowerWagon ?? PW frame part # 55398868AC---Reg 2500 #55398813AC
About 2" taller, 12,000lb winch w/mounting brace between framerails,electronic disconnecting swaybar(for awsome articulation),electronic locking axles front & rear(for true 4-wheel drive),tow pkg, fully skidplated,forged one piece Alcoa rims w/internal beadlock lips,larger diameter(one ton) axleshaft in rear,160 amp alt,HD battery,4.56 gears,low range electronic recalibration of gas pedal sensitivity,more but thinner leafs in rear spring pack(for better articulation), 33" BFG All-Terrain tires. 78.016:1 crawl ratio. All for $6100.00 more! Oh yeah, almost forgot-Bilstein shocks. Gear ratios: 1st 6.29:1 2nd 3.48:1 3rd 2.10:1 4th 1.38:1 5th 1.0:1 6th .79:1.. Rev 5.74:1.
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#13 Old 01-25-2011, 12:29 AM
rootkit
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I ran m1 with a fram/mopar filters and changed it every 5k. I put some seafoam in the motor every 20k miles (every 4 oil changes) I would hope that sucker was clean. I did abuse that truck but she did well!

I would be more worried if the oil is milky and you can see it under the oil cap.

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