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Sat, Jun 18, 05 at 11:28
| This oil sludge seems to have become a problem for many autos, NOT just Toyota.
Nor is the reason why accurately known. Some say the oil change intervals are too long; many owners do not care and trade every three -five years.. Too many short runs Emission controls(high operating temps for better combustion) This fairly new product "Auto-RX" claims to alleviate this condition.
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Follow-Up Postings:
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| Auto-RX really does seem to work. I assume you learned of it at the bobistheoilguy.com website--if not, go there and visit the forums. Someone did a study of the product and took many pictures of the valvetrain of their engine--yes, it cleaned up the deposits and sludge that was on the valvetrain. |
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| It might work. There have been engine cleaner type products out for as long as I can remember. It probably just has more detergent or some kind of solvent in it. This one pretty much looses me starting out with "This extreme heat, when combined with engine oil, also creates harmful byproducts such as sludge,...". I used to see engines with sludge. The cause appeared to be the engine not getting up to operating temperature, not extreme heat. There were engines that had crusty spots like on the valley pan where heat probably was the cause though. If people who make a lot of short trips would change there oil @ 3 months or 3k miles and make sure their thermostat works they won't have any problems. I don't think anything a person dumps into the oil will make up for problems related to not changing the oil often enough. jmo |
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| "Sludge" is probably the wrong term. The oil pump screens are being clogged with "baked" oil particles.. Why ? All turbocharged engines must use a special high heat synthetic oil, changed every 3 months....IMO... Regular engines should have their oil changed every 4 months....And this is against the industry tide of changing the oil one a year. Quite a problem. |
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| Auto-RX does not use any solvents to clean (I read the patent on it). What it does use is, if I remember correctly, esters derived from lanolin. I have used Auto-RX. The greatest benefit was in the power steering system on my 1988 Mustang. In cold weather it used to be stiff when first starting up(morning sickness I think). Now that problem has gone away (and I did try changing the fluid; that didn't help). I added 2oz of Auto-RX to the power steering, drove it for 1000 miles, then changed the power steering fluid (by disconnecting the cooler hose and letting it drain). |
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