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Old 07-24-2013, 10:31 AM
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Do I take the title for the engine with the worst sludge?

The owners before me should of been shot. This is what I have been battling for 80k now on my 1998 dodge 1500 5.2

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Old 07-24-2013, 10:34 AM
Mark Oomkes Mark Oomkes is online now
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Looks like they were using Pennswax.

I saw one that bad way back when.........from someone who had used Pennswax.
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Old 07-24-2013, 10:38 AM
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Quote:
Originally Posted by Mark Oomkes View Post
Looks like they were using Pennswax.

I saw one that bad way back when.........from someone who had used Pennswax.
When I bought the truck and switch to castrol I would loose oil pressure going down the road because it would come off in flakes and clog the oil pump screen. I even had one oil filter plug up with sludge when I got the truck. I got 200k on the truck and I bought it at 127k. I can't imagine what it looked like then.
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Old 07-24-2013, 10:55 AM
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Exact Rototilling Exact Rototilling is offline
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Product called AutoRx will slowly remove it.

Mobil 1 High Mileage oil does some cleaning as well as Pennzoil Platinum and newer Ultra is supposedly the highest in off shelf cleaning ability.
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Old 07-24-2013, 11:05 AM
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Quote:
Originally Posted by Exact Rototilling View Post
Product called AutoRx will slowly remove it.

Mobil 1 High Mileage oil does some cleaning as well as Pennzoil Platinum and newer Ultra is supposedly the highest in off shelf cleaning ability.
1 qt of transmission right before an oil change also. I be using a BG product next I order from my dealer.
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Old 07-24-2013, 11:53 AM
deter deter is offline
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Its pretty common in those engines. They had an issue with sludge, for whatever reason (design?)
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Old 07-24-2013, 12:28 PM
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CorkyE CorkyE is offline
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Quote:
Originally Posted by deter View Post
Its pretty common in those engines. They had an issue with sludge, for whatever reason (design?)
Same here - I've seen several pic's of those engines sludging up pretty bad.
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Old 07-24-2013, 01:03 PM
44DCNF 44DCNF is online now
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A good synthetic is highly resistant to sludge formation. While this may be common among certain engines, there are usually faulty mechanical conditions, or sheer neglect behind it. During the energy crisis on the seventies as engine design changed to save fuel and lower emissions, you'd see lots more of it. Shorter oil change intervals were often required. I've seen the same crud where Quaker State was the oil of choice, but it was also in a neglected engine, overdue on oil change, dirty air filter, bad pcv valve and iirc, it had a leaky intake manifold gasket, which is what lead us to tearing it apart. I think they've since pretty much corrected design conditions that were contributory back then.
Moisture and crankcase ventilation are a big factor. If oil is not maintained, inferior oil used, or through poor air filtration and dirty gas, too many contaminants enter the engine thereby depleting the additive package, the additives that deal with acids, moisture, foaming and debris cannot keep up with the task.
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Old 07-24-2013, 04:28 PM
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jkilov jkilov is offline
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You will hear a lot of bogus suggestions as to how to get this fixed (ATF, diesel, diesel oil, seafoam) and while there may be some truth to each, there are only two correct ways to get it done:

A) take it to a shop to have the engine steam cleaned

B) use high detergent oils (preferably synthetic) and change every 3000 miles. This should slowly dissolve the sludge without dislodging chunks
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Old 07-24-2013, 04:40 PM
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Valk Valk is offline
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With that much sludge you run the risk of destroying/seizing up your oil pump if trying to slowly deal with this debacle. Like jkilov said, steam clean this mutha.
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