Question about 2004 Lexus ES 330

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I have been told that sludge buildup in this vehicle is significant and the rings and seals need to be replaced. Dealer is talking major bucks. I think it is a warranty issue, have had oil changed regularly on this vehicle.

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If you are using an excessive amount of engine oil, you may have an internal problem. However if the "sludge" the dealer claims is there is actually present, you could change to a good quality synthetic oil. Synthetics resist sludge formation far better than any conventional lubricant and actually will slowly dissolve anything that is in the engine presently. Though I'm not a big "fan" of Mobil one, it does have likely the strongest detergent package of the major synthetics available.
Do not pour anything into the intake system. If done incorrectly you can "hydro-lock" a cylinder and bend a connecting rod. Doing that can clean the piston tops and sometimes shake loose carbon on the valves but can also harm the O2 sensors. High test fuel has no extra cleaning ability above the recommended fuel. Most "top end" cleaners will all work equally as well. The only item they actually will clean is the injectors and sometimes the valves...sludge does not get into the intake system but can jam up the piston rings and restrict oil flow through the pump pickup screen. Both are important.

Posted on May 29, 2010

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It's the ES300 with the smaller engine that was subject to the sludging problemm thru 03; sludging was prevalent on Lexus and Toyota 3L V6 engines. The ES330 DOES NOT have this problem.

Posted on May 29, 2010

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No way. Unless you sit in city traffic for 8 hours a day, I don't think you can trash an engine that fast. Especially if you have changed your oil. First thing you do, Is get a can of Marvel mystery oil, when your oil is one qt low, dump this in. Or do it next time you change it, make it the fifth qt. Save the filter, mark on the filter "before", Then get some fuel injection cleaner, and fill it up with high test. Now were going down the turnpike!!! Run that thing, fast, step on it, burn that stuff out of there, pass a few cars. Next time you change the oil, get the old filter, mark the new one,(after), take them to somebody who will cut it apart for you. Look at the paper elements and see the difference. You probably won't believe it! This operation may take a month, but try it. Or you can go back to the dealer and pay him $4,000 to do what you just did for $10. One more thing, if it doesn't run better, take a qt of water, and pour it down the intake with the engine running and your hand on the throttle, rev that stuff through there, it will steam clean the inside of your engine. You only have to do this if you think the dealer is right, if your car is running ok, somebody is pulling your leg. But this won't hurt. And it will clean out your engine.

Posted on Apr 26, 2010

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This advice you received is correct.

Blue smoke emmitted from the tailpipe signifies the engine is burning oil.

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