Bob posted a picture, in the Car and Truck Lubrication section, in the thread "most sludge resistant oil", of a sludged up toyota engine. How would and should the various cleaners that are discussed here be used to clean this mess up?
Monarch, I a a copy of an article from Autonews (not sure if I can post a link or not) that describes the problem in a Sienna that had receipts for oil changes with 4-6K intervals. It still sludged up.quote:
Originally posted by BOBISTHEOILGUY:
Monark, please... I see your a sales person and don't know in what, but can assume oil. If so, I don't know what you have to back up your suggested drain intervals but It is ill-advisable to do 5k on the standard dino oil in these engines.
3k if possible but by 4k the oil will be strung out to the next lower viscosity so do not do 5k unless you verify with oil analysis.
As for synth, 5k no problem but on past that, yes it might work 7,500 k but again, your driving habits/enviorment may prohibit this so oil analysis would be most prudent to ensure you can take the current oil you are using to those levels.
I have to say that it is amazing how toyota has all the sludge problems with customers that cannot do proper maintanence but have enough that they can sue. If the maintanence issue was true due to customers in ept ability to maintain scheduled maint, then why not chev or nissan with the same problem? Guess the toyota customers are less responsible? This is what got toyota in trouble to begin with as they pointed the finger at them saying it was thier fault and I can assure you that there was only a few handful that was guilty of that.
Pablo, An engine flush such as your suggesting would cause damage to a motor in this condition. Problem is a fast cleaner will not work on this cause it would have to break stuff off in chuncks and this is not a good idea.
If the engine didn't have any death rattles or knocks, then most of the time these engines were rebuilt provided no scaring on the piston walls. They would completly dis assemble the engine, put it through a 1.5 hr steam bath to clean out the debre after then had scrapped what they could, Then reassembled. Otherwise, they replaced the short block.
Maybe they were using Schaeffer's dino?quote:
Originally posted by BOBISTHEOILGUY:
Manark,
Where do you get all your statistics from? Seems you are defending toyota on an issue that is very fleeting at best to most, have you got an interest in this campain? I'd like to see what numbers you have to support the 3 to 5k drains with dino with no problem.
Monark,quote:
Originally posted by monarch:
TooSlick: How come thousands of
'97 - '01 owners have already accumulated over 100,000 trouble free miles? Why aren't Toyota dealers lots overflowing with sludged vehicles awaiting engine replacement? Why do we not see Toyota V6 cars stranded beside our highways with seized engines due to sludge? On the basis of common sense, I
tend to believe Toyotas claim that less than 1% of V6 owners are getting sludge following the factory recommended oil change interval of 5000-7500 miles and that this 1% incident rate could be mitigated if owners would use 3000-5000 mile dino change intervals.
I've heard there are 3,300,000 of the '97-'01 sludge susceptible V6's and 4 cyl engines on the road. Since Los Angeles = about 10% of the USA population and is a region where Toyotas are very popular, I think its reasonable to assume there are about 300,000 of sludge susceptible engines on the road in this one area alone. I also think its reasonable to assume at around 10% of these owners (around 30,000 of them) drive 25,000 -50,000 miles or more a year and now have 100,000 -200,000 miles on their cars.