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#11
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We traditionally call "sludge" is a substance caused by motor oil exposed to normal motor temperatures plus water and other combustion contamination that forms a mixture of various compounds that participate out of the oil. Over time these compounds can coke-up and form a solid mass. Synthetic oil tends to avoid this by doing a better job of keeping the compounds in suspension and a better job of dealing with the acids that form when the compounds are exposed to water. Any detergent oil will quickly disolve the hardest deposits if change frequently enough, perhaps every 500 miles, till the sludge and hard mass is desolved. More likely a problem caused by 1. poor design of the lub system, 2. changed fuel mixtures, 3. failure to use an oil that can deal with the changed fuel mixtures, and 4. not letting the motor come up to full running temperature. The reports you hear about spark, coolant, etc., are pure magic. Richard. |
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#12
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pawn wrote:
> Bill Putney wrote: > >> Bill D wrote: >> >> >> I've certainly heard lots about the problem, but that's the first I've >> heard that explanation. I'm not ready to totally discount it until I >> hear more, but I'm having a very hard time imagining how coolant (that >> is not leaking internally) can cause sludge in the crankcase! Are the >> ignition current spikes supposed to disturb gasket interfaces and thus >> cause the coolant to leak into the crankcase and form sludge with the >> oil? >> > > Just to give more data: I have not even once changed the coolant in my > 2.7l which now has 205,000 kms (127,000 mi). Also I'm on my second > synthetic oil change without catastrophe. And of note: my commute has > recently been reduced from 70kms each way to about 20 kms each way. I > will update the group with any change in the, what I would now call > dependability, of my motor. > Please post your VIN so that nobody reading here wil buy your car when you sell it. Not maintaining a car is like not taking care of your body. It may not fail today, but it will ... just a matter of when. Matt |
#13
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pawn wrote:
> Bill Putney wrote: > >> Bill D wrote: >> >> >> I've certainly heard lots about the problem, but that's the first I've >> heard that explanation. I'm not ready to totally discount it until I >> hear more, but I'm having a very hard time imagining how coolant (that >> is not leaking internally) can cause sludge in the crankcase! Are the >> ignition current spikes supposed to disturb gasket interfaces and thus >> cause the coolant to leak into the crankcase and form sludge with the >> oil? >> > > Just to give more data: I have not even once changed the coolant in my > 2.7l which now has 205,000 kms (127,000 mi). Also I'm on my second > synthetic oil change without catastrophe. And of note: my commute has > recently been reduced from 70kms each way to about 20 kms each way. I > will update the group with any change in the, what I would now call > dependability, of my motor. > Please post your VIN so that nobody reading here wil buy your car when you sell it. Not maintaining a car is like not taking care of your body. It may not fail today, but it will ... just a matter of when. Matt |
#14
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Matt Whiting wrote:
> pawn wrote: > > Please post your VIN so that nobody reading here wil buy your car when > you sell it. Not maintaining a car is like not taking care of your > body. It may not fail today, but it will ... just a matter of when. > Sure, here ya go: Xn3o2b3o9d8y4a7s3k9e4d0y5o8u3 You have no idea how I maintain my car. It's running fine, thanks, and as with every single car I've ever owned, well into it's high mileage years. But don't think I don't appreciate your opinion, I have a very special place where I keep opinions just like yours. |
#15
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Matt Whiting wrote:
> pawn wrote: > > Please post your VIN so that nobody reading here wil buy your car when > you sell it. Not maintaining a car is like not taking care of your > body. It may not fail today, but it will ... just a matter of when. > Sure, here ya go: Xn3o2b3o9d8y4a7s3k9e4d0y5o8u3 You have no idea how I maintain my car. It's running fine, thanks, and as with every single car I've ever owned, well into it's high mileage years. But don't think I don't appreciate your opinion, I have a very special place where I keep opinions just like yours. |
#16
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pawn wrote:
> Matt Whiting wrote: > >> pawn wrote: >> >> Please post your VIN so that nobody reading here wil buy your car when >> you sell it. Not maintaining a car is like not taking care of your >> body. It may not fail today, but it will ... just a matter of when. >> > > Sure, here ya go: > > Xn3o2b3o9d8y4a7s3k9e4d0y5o8u3 > > You have no idea how I maintain my car. It's running fine, thanks, and > as with every single car I've ever owned, well into it's high mileage > years. But don't think I don't appreciate your opinion, I have a very > special place where I keep opinions just like yours. > 127,000 miles on the original coolant is not proper maintenance. You must value my opinion or you wouldn't have bothered to respond. :-) Matt |
#17
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pawn wrote:
> Matt Whiting wrote: > >> pawn wrote: >> >> Please post your VIN so that nobody reading here wil buy your car when >> you sell it. Not maintaining a car is like not taking care of your >> body. It may not fail today, but it will ... just a matter of when. >> > > Sure, here ya go: > > Xn3o2b3o9d8y4a7s3k9e4d0y5o8u3 > > You have no idea how I maintain my car. It's running fine, thanks, and > as with every single car I've ever owned, well into it's high mileage > years. But don't think I don't appreciate your opinion, I have a very > special place where I keep opinions just like yours. > 127,000 miles on the original coolant is not proper maintenance. You must value my opinion or you wouldn't have bothered to respond. :-) Matt |
#18
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Matt Whiting wrote:
> > 127,000 miles on the original coolant is not proper maintenance. Well, you certainly have an opinion and I encourage that from special people like you. > You > must value my opinion or you wouldn't have bothered to respond. :-) No, I don't. If that's how you epect to sneak your idiocy through Usenet, sorry, everyone knows that trick. But, hey, I'll give you a chance. Give one good reason why you thought it was a good idea to challenge me on this subject, but not Bill Putney? I mean, he claimed to have not changed his coolant until the same mileage as me. And he said that hours before you offered your well thought out post. Could it be that you see your place in the scheme of things as a small little man that really hasn't yet challenged anyone in the outside world that's willing to trounce you. Because, that's pretty much how I read it. Feel free to enlighten me otherwise. |
#19
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Matt Whiting wrote:
> > 127,000 miles on the original coolant is not proper maintenance. Well, you certainly have an opinion and I encourage that from special people like you. > You > must value my opinion or you wouldn't have bothered to respond. :-) No, I don't. If that's how you epect to sneak your idiocy through Usenet, sorry, everyone knows that trick. But, hey, I'll give you a chance. Give one good reason why you thought it was a good idea to challenge me on this subject, but not Bill Putney? I mean, he claimed to have not changed his coolant until the same mileage as me. And he said that hours before you offered your well thought out post. Could it be that you see your place in the scheme of things as a small little man that really hasn't yet challenged anyone in the outside world that's willing to trounce you. Because, that's pretty much how I read it. Feel free to enlighten me otherwise. |
#20
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"pawn" > wrote in message ... > said that hours before you offered your well thought out post. Could it > be that you see your place in the scheme of things as a small little man > that really hasn't yet challenged anyone in the outside world that's > willing to trounce you. Because, that's pretty much how I read it. > Feel free to enlighten me otherwise. > Matt, don't bother. I'll tell it to him again since he obviously doesen't have it through his thick head yet. Pawn, 127,000 miles on the original coolant is not proper maintenance. Ted |
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