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Post Info TOPIC: 1996 Avalon Heavy Crusty Sludge


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1996 Avalon Heavy Crusty Sludge
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Hi:

I posted the following post at BITOG and wonder if you have any recommendations.

http://theoildrop.server101.com/forums/showflat.php?Cat=0&Number=940375&an=0&page=0#Post940375

I have 3 bottles of auto-rx on the way. I used a soft-wire brush and kerosene to clean off a lot of the gunk. The problem is that the kerosene did not dissolve the stuff, so I had little chunks everywhere, so I dumped a bunch of kerosene on the heads in order to wash it all down into the pan. I'm going to remove the pan and clean it and the pickup screen real good before I put more oil in and a new filter and start the auto-rx. Should I use a pickle-brush to clean the passages between the head and the oil pan so that it all gets down there before I remove it and clean it?

I'm worried I'm going to lose this engine when the chunks make their way to the crank bearings. Should I try to dissolve it all with a hot Amsoil flush before trying the auto-rx?

The reason I removed the valve covers and tried to clean it is because of this link at a toyota mechanics website who has seen a lot of these. The problem is that I think my sludge is a lot crustier than I think he is used to seeing, so it did not dissolve, even though I got the engine hot before trying to clean it.

http://yotarepair.com/Engine_replace.html




-- Edited by Jonness at 16:58, 2007-07-21

-- Edited by Jonness at 18:26, 2007-07-21

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Jonness,

I vied you post on BITOG and I would do 3 cleanings and rinse phases. I would use dino oil on all 3 treatments.

Daryl


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http://yotarepair.com/Sludge_Zone.html

You have one of the sludge beasts and you should not touch your vehicle with Autorx or anything else for that matter. Take it to Toyota first and see what they are going to do, if they do nothing take all your evidence to a lemon law lawyer. If you self help yourself you will lsoe your rights, 1996 Avalone is on the list, see link above. If all that get's nowhere, i'd do a couple Autorx treatments with cheap dino, and then switch to M1 and do 4k OCI's.

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Seeing what Toyota will do for you is a good idea. Using synthetic oil to clean out sludge is a bad idea you always want to use non synthetic for Auto-Rx Applications and stay with non synthetic oil after sludge is removed as your engine valve train is a sludge maker by design. Auto-Rx can clean out your existing sludge and liquify what sludge is still being made and drive this to the filter. If all Toyota is going to do is clean your oil screen & valve train (for nothing-great) if they want the standard $1800.00 "JUST SAY NO"


We can help you drive for a long time by controlling the inherent sludge problem. No matter what your decision glad you posted here and not some message board whose information may or may not help and could hurt.

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Agreed, check with Toyota first. If no satisfaction through the legal system, ARX can definitely make a big difference in this motor. You are going to need to do at least two applications, with the standard OCI's on dino oil. That is 1500 mile cleaning applications, followed by 2000 mile flushes, with new filters at each stage.

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I didn't take it to Toyota because it was after the 8 year clause and also I recently bought the car and have no prove (other than the what the owner said) that the oil has been changed regularly. So I thought I would just get the run around.

Also, I had already removed the valve covers and wire brushed a lot of this stuff off. After having done that, the car quit smoking and quit burning oil (because it unblocked the breather vents).

So right now I am using auto-rx to clean out the sludge that is left in the engine. I'm at 1500 miles on the first clean phase, and the oil is a little (not a lot) darker than usual. I think the valve train has quieted down a little. I read a recent post at BITOG that says it is now recommended to extend the clean phase to 2000 miles and the rinse phase to 2500. So I am probably going to do that unless you guys think that is a bad idea.

Also, guys at BITOG recommended I use diesel oil like Shell Rotella during the rinse phase. Do you agree that this is a good idea?

Thanks!

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Bitog has no vested interest in your car. When you buy Auto-Rx it becomes my responsibility & yours to use it responsibly. Button this engine up and go change oil to a non synthetic WalMart comes to mind buy some cheap oil filters. Add 1 complete bottle of Auto-Rx in the non synthetic oil drive a total of 2000 miles (at 1000 miles put on new filter top off oil and finish the last 1000 miles) Now keep using Walmart your in rinse mode drive 1500 miles and replace filter top off oil and finish rinse mode, YOU HAVE COMPLETED FIRST APPLICATION hopefully we have also cleaned out all the "flushes-kerosene you have used also.
LET ME MAKE THIS CLEAR IF YOU HAVE A CHUNK OF SLUDGE FLOATING AROUND AND IT STOPS UP YOUR ENGINE THIS IS YOUR RESPONSIBILITY AS IT WAS YOUR DECISION TO USE SOLVENTS. AUTO-RX IS NOT LIABLE FOR ANY DAMAGES DONE TO YOUR ENGINE AND OUR GUARANTEE IS NOT IN FORCE FOR YOUR PURCHASE OF AUTO-RX AND YOUR USE OF AUTO-RX. IF THIS IS ACCEPTABLE TO YOU POST YOUR ACCEPTANCE AND I WILL TRY AND GET YOU OUT OF THIS MESS.






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If I had listened to BITOG I probably would have put Seafoam or something else, stick with Auto-Rx, now the clean phase is 2500 miles and the rinse phase is 3000 miles, I did a 3000 mile rinse phase on my 83 El Camino, look at ( Valvetrain Noise still there with Auto-Rx) noise is actually a header bolt that broke off, letting some exhaust leak. I changed my filter 7 times during the 3000 mile rinse phase and I have a 1 quart filter, when I changed the filter the last time it was finally light, now I am on another clean phase, talk to Frank and he might agree with me ,you will need to change the filter every 500 miles or sooner, you will know when it is time to change the filter when the engine does not have as much power, in 3000 miles I changed my filters at 900, 1500, 1700, 2000, 2200, 2500, and 2700 miles. One thing I did was take the car out each night from mid May until late August for a 50 to 60 mile run each night to get the engine working to do the clean and rinse, I do not believe in taking the car on short trips, the oil never really warms up, also make sure your pcv and breather are not clogged, make sure you do not have a thermostat that is stuck open, how many miles on the engine, your engine looks like my Dad's 79 Bonneville, he takes short trips, his thermostat never worked properly, and with 200K over 28 years, thats like 7142 miles a year and he changes the oil whenever he feels like it, maybe once a year if he is lucky, it sounds like this guy hardly ever changed his oil or took it on short trips, I talked with a mechanic years ago he said change the pcv and breather once a year regardless of mileage, 5 to 10 dollars a year can save a lot of headaches, if the pcv is not working right you will get carbon, finally changed my father's pcv it was gunked up and there was carbon, oil does not get hot enough there will be sludge which will restrict oil flow, poor maintenance poor engine performance, I have stuck with Frank and my engine keeps running better, remember the bulk of the stuff happens in the rinse phase, read my post about what a mechanic told me about Amsoil Engine Flush and those engine oil flush machines.

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You said, "YOU HAVE COMPLETED FIRST APPLICATION hopefully we have also cleaned out all the "flushes-kerosene you have used also."

I want to make it clear that I never ran kerosene in this engine (i.e. a tradtional kerosene flush). I put a half gallon of kerosene in the engine and allowed it to sit in the oil pan overnight without running the car (the full cleaning methodology is detailed in my post at BITOG). There is quite a difference between putting kerosene in an engine and running it and putting kerosene in an engine and not running it. The methodology I used is recommended by a well-known and highly respected Toyota Factory Service Manager, and this is the methodology that Toyota uses when you take the 1MZ sludged engines in for repair. I realize that you probably disagree with this methodology, but please understand that I worked on this engine just prior to discovering auto-rx. However it is important to note, before following the advice of the Toyota guru, I had to add a quart of oil everytime I filled the gas tank. Also the engine emitted huge clouds of smoke upon cold startup. I am happy to report that the engine is now cured of its bad symtoms. In fact, I put 1500 miles on the engine since the last oil change, and nearest I can tell, it does not burn a drop of oil. Also gone is the huge cloud of smoke upon cold startup. In short, it runs like a brand-new engine. I believe this is because the breather vents were blocked under the valve covers, and when I pressure washed them clean, it allowed the engine to breath for the first time in a long time. My feeling is that when those vents become blocked, the 1MZ engines can no longer breath and start pushing oil down the intake manifold where it is burned in the combustion process. No matter how frequently you change the oil after that, unless you use a cleaner like auto-rx or remove the valve covers and physically clean or replace them, the sludge will just continue to pile up.

To be perfectly clear, I changed the oil in this engine perhaps 6 or 7 times before adding the auto-rx; thus, there is no kerosene left in this engine for the auto-rx to clean out. The only reason I am now using the auto-rx is because I would like to clean out the remaining sludge that I was unable to get at using the Factory Service Manager's recommendations. I guess Totota just leaves the stuff in there when they restore these engines, but that is not good enough for me. I want my entire engine clean, not just the parts that were causing the increased oil consumption. From what I have read and have had recommended to me, auto-rx can clean the entire engine, so that is what I am after. I am running a detailed account of this restoration at BITOG, thus anyone who wants to follow my progress is welcome to follow along.

I do not hold auto-rx liable for the previous work I have done, but also, it is important to note that the almost miraculous curing of my symptoms has been due to the recommendations of the Toyota mechanic and not the auto-rx, so it is important that nobody gets that confused. I am using the auto-rx only to clean the parts that were not cleaned with the previous methodology. I am keeping a detailed photo documentary of this process. So far, I am 1500 miles into my first cleaning phase, and I believe the auto-rx has caused the oil to become slightly darker than usual and has also resulted in decreased valve train noise. Note that the cleaning I did prior to adding auto-rx had no effect on the valve train because I did not attempt to clean those parts, so I attribute the reduction in noise entirely to the auto-rx.

So I currently believe the auto-rx is doing its job, but I have a long ways to go before finishing my 3 complete cleaning and rinse phases. It is important to note that I will continue to pull my oil pan and physically clean the oil pickup tube between oil drains as the pickup tubes in these engines are very poorly designed and clog extremely easily. It is better to be safe than sorry. I also change my filters more frequently than I change the oil, and I cut the filters open so I have a detailed understanding of exactly how much stuff is being deposited there. As Frank alluded to, my methodology of physically cleaning the engine is dangerous, and is not advised. It worked for me, but I am very mechanically inclined and work in a detailed and meticulous manner. Had this not been the case, I would have surely allowed the pickup tube to clog and ruined this engine.

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Auto-Rx works if you work it and therein is the problem. Brent has got it right. Toyota seems to have at least helped you fom my-e-mails, they don't seem to do much for there customers in the way of sludge removal compensation. By the way since the sludge wil reapear in a few thousand miles do you think Toyota will help you again?

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Brent: Thanks for posting. I have 1500 miles on the first clean phase and have changed the filter every 750 miles. So far this has been a good interval. I was thinking of letting my filter go a little longer as Frank has recommended above, but I suppose one is better safe than sorry. Especially when they have disturbed the oil layers in the engine like I have. I guess the good part about that is I took perhaps two pop cans full of heavy crusty sludge out of this engine before adding the auto-rx, so I won't have to hold that in suspension while I finish cleaning out the engine.

Also, my work is 50 miles from my house, so I don't do many short trips on the car. Since I cleaned the breather ports under the valve covers and changed the pcv valve, this engine has become like a new engine and burns absolutely no oil. It is like a miracle. I think the previous owner sold the car to me cheap because he knew about the sludge problem, but it has turned out to be a really good deal after all.

I'm glad I stumbled onto the auto-rx site before I totally finished my cleaning because I had it in mind to do a hot chemical flush or use a flush machine after I completed the Toyota recommended repair. Also, I'm under the impression that the Totota recommended repair is not always successful. I think that is because it can result in a clogged pickup screen; thus, I was pretty obsessive-compulsive about pulling my oil pan and changing my filter between very short interval changes until I saw the debris stabilize. Had I not done that, I believe I would have lost this engine. Interestingly, Toyota does not do that as part of the repair. I'm guessing their method leads to losing a fair amount of these engines.

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Another thought that I'd like to bring up. Solvents that I've used in the past attack the carrier oil as well as the deposits while its running thru your engine. Solvents reduce the viscosity and remain behind after being drained. Strong solvents may remain in very small amounts in areas that do not drain well. This may be behavior that is not useful to the life of the engine. Solvents can remove the surface from seals and o-rings and leave behind a rough surface. For the average owner this behavior constitutes a risk. The use of solvents requires knowledge of the condition of the engine and the progress encountered during the process. Wear and damage caused by the use of solvents is difficult to detect or separate from existing problems. When Auto-Rx is used you can concentrate on evaluating the results without the worry of leaving it in to long or having problems because small amounts were left behind. When my 23 year old Civic wagon failed California smog I paid the fees and took the time to do a double treatment. The day of the test I cut the rinse phase short, changed the oil and passed the test, with no other changes. I did not see a lot of black crud or dramatic visual results from the treatment but it went from fail to pass. I have no other explanation than Auto-Rx. This car is like my little blue blanket (my woobie if you watched Mr. Mom), and I was not going to pour a dose of engine flush in it. No white papers needed for me.

Lonnie


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Frank: Toyota didn't do anything for me for sludge removal compensation. They will only repair the engine if it is within 8 years of the date the vehicle was manufactured. The Factory Service Rep that gave me the advice no longer works in that capacity and now strictly works as a consultant to individual dealerships. So the advice did not come from Toyota per say, it came from a guy who worked for them for several decades and has seen a ton of these sludged up engines come through the shop. It is not in Toyota's best financial interest to immediately replace the sludged engines, so first they attempt to clean them. If this fails, they replace the engine (as long as it falls within the 8-year range and you can prove you changed the oil at regular intervals).

Depending on which shop you choose, they will either do the cleaning with or without removing the heads. I have seen one case of an engine burning up even after Toyota did the full head removal. So even using their best methodology, they still lose some of these engines and end up having to replace them.

Thus, whoever ends up having a sludged Toyota engine that has went past the 8-year Toyota repair limit would be well-advised to try auto-rx as a first repair attempt. I strongly recommend against hot kerosene flushes with the heavily sludged engines because this will almost certainly result in a clogged pickup screen and a burned up engine.

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I would also like to add that using the Toyota method did not result in any kerosene getting between the filter and the bearings, so that is why I said there is a difference between a cold kero flush and a hot flush. IMO, the two major concerns with hot kerosene flushes are:

1) It allows the kerosene to work on the oil journals in between the filter and the bearings. Thus the bearings have absolutely no protection when chunks break off and head upstream.

2) It results in a huge amount of stuff breaking off and clogging the filter or the oil tube pickup screen. If the pickup screen is clogged the engine burns up, and if the filter is clogged it can go into bypass mode and allow the junk to go straight to the bearings.

But even though I believe a cold kerosene flush is safer than a hot kerosene flush, It is still a lot more dangerous than using auto-rx. Personally, I am just beginning to use auto-rx, so I can't speak to its ability to clean an engine with as much hard crusty sludge as mine, but I do wish I had tried it as a first course of treatment. That would have been an interesting experiment. But all in all, I'm just happy with the way things have turned out, and I'm looking forward to the additional cleaning that auto-rx affords.

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Jonness

Did you read this post ? by Lonnie? Do you think not a drop of kerosene stayed in the block ?



Another thought that I'd like to bring up. Solvents that I've used in the past attack the carrier oil as well as the deposits while its running thru your engine. Solvents reduce the viscosity and remain behind after being drained. Strong solvents may remain in very small amounts in areas that do not drain well. This may be behavior that is not useful to the life of the engine. Solvents can remove the surface from seals and o-rings and leave behind a rough surface. For the average owner this behavior constitutes a risk. The use of solvents requires knowledge of the condition of the engine and the progress encountered during the process. Wear and damage caused by the use of solvents is difficult to detect or separate from existing problems. When Auto-Rx is used you can concentrate on evaluating the results without the worry of leaving it in to long or having problems because small amounts were left behind. When my 23 year old Civic wagon failed California smog I paid the fees and took the time to do a double treatment. The day of the test I cut the rinse phase short, changed the oil and passed the test, with no other changes. I did not see a lot of black crud or dramatic visual results from the treatment but it went from fail to pass. I have no other explanation than Auto-Rx. This car is like my little blue blanket (my woobie if you watched Mr. Mom), and I was not going to pour a dose of engine flush in it. No white papers needed for me.

Lonnie



-- Edited by Frank Miller at 00:39, 2007-08-28

-- Edited by Frank Miller at 00:40, 2007-08-28

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Jonness, I talked with my friends brother who is a service advisor at Toyota, I asked him to look at your thread, he thought that the previous owner probably did not change the oil much as well as the pcv. He said that most people who come in with sludge problems on their Toyotas did not change the oil enough. It seems as though on these engines the oil return holes are small, he had one guy come in with a sludge problem he had not changed his oil in 3000 miles but instead at 8000 miles. He said this is a maintenance problem not a design problem. When you buy a used car with a lot of miles you really never know what you are getting into, just stick with Auto-Rx, I am into my third clean phase and the car just keeps running better, there is no quick cure for your problem. The service advisor also said he never saw any problems with your car but mostly with the Camry's. Before I forget, how many miles are on this car.

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