2004 Chrysler 2.7 Engine Sludge

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BERNSAX
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I always hear the bad things about the 2.7 and the sludge problem. (After I bought one).

Even read stories about those who changed the oil with synthetic every 3,000 miles and they still had a ruined engine anywhere from 50,000 to 65,000 miles.

Does anyone know of a 2.7 engine that lasted 100,000 + miles without it shucking out?

If so, what was their oil changing routine.

I have read that Chrysler corrected the sludge problem with the 2003 and newer engines. However, there are websites that say the problem still exists. Mine is a 2004.

Any info. would be appreciated.
Feb 19, 2007 at 9:15 AM
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CHEVY22
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they may have fixed the problem now , ive seen some of the 2.7 go over 100k , what ive noticed and have been told by Chrysler reps is they had two castings they were using for the blocks , which the block is actually the beginning of the sludge deal but even with routine oil changes those certain blocks which i was told was a very large number would breed sludge ,the company is still being sued autosafety.org just keep your eye on things
Feb 19, 2007 at 9:58 AM
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BERNSAX
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Thanks for the reply.

The mechanic I visited with suggested using Amsoil engine flush periodically at oil changes. Would you advise this?

There are other engine flushes on the market. Would you recommend any of them?
Feb 19, 2007 at 11:15 AM
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CHEVY22
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no i have to say i dont trust anything in the crank case except oil

thanks
Feb 19, 2007 at 11:17 AM
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TEXASMOON39
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I have a 2001 Chrysler Sebring LXi 2.7L 6cyl with 120,000 miles. I change the oil every 3000 miles with Castrol 10-40. Okay I admit, sometimes I have gone a little over to about 4000 miles between oil changes.
Feb 21, 2007 at 3:05 PM
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CHEVY22
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doesnt your car take 10-30 ???
Feb 21, 2007 at 10:12 PM

Suggested Repair

Do not add engine flush to the crankcase; use only the manufacturer-specified engine oil and change it regularly. Confirm the correct viscosity, such as 10W-30 if specified, and monitor the 2.7 engine for sludge.

Conversation Summary

A 2004 Chrysler 2.7 owner asked whether these engines can exceed 100,000 miles despite sludge concerns and whether periodic engine flush is advisable. An expert said some engines exceed 100,000 miles, linked sludge to certain block castings, and advised against putting anything other than oil in the crankcase. Another owner reported a 2001 Sebring 2.7 reaching 120,000 miles with frequent Castrol 10W-40 changes, and the expert questioned whether 10W-30 was specified.

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