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bernsax
User

Aug 13, 2006, 11:17 AM

Post #1 of 3 (1817 views)
Sludge Sign In

After reading the response to my question about the 2.7 engine, I am curious about removing possible existing sludge. I think I now understand the problem with the timing chain of this engine.

The car I just bought has 27,000 miles on it. I have no idea if the previous owner actually changed the oil on a proper schedule.

One of the articles I read says not to add any type of oil additive that will remove sludge.

If I use a quality oil such as Castrol and change it within 3,000 miles, will the possible sludge eventually disappear?

Would I be better off to switch to Mobile 1 synthetic?


DanD
Veteran / Moderator
DanD profile image

Aug 13, 2006, 12:08 PM

Post #2 of 3 (1815 views)
Re: Sludge Sign In

If the sludge is there it’s there and there’s not a lot you’re going to do to get it out of there safely. Even changing brands of oil may cause larger chunks of sludge to break off and plug the oilier passage for the chain.
All brands of oils have their own chemical packages with cleaners in them. Some clean certain things better then others; switching from one brand to another; it may clean something that the old oils package wouldn’t touch. I’m not a chemist so don’t ask me which to stay away from; so buy the oil that you wish to use and keep your fingers crossed.
I also won’t get into the debate over synthetic or organic; just stay with the recommended grade of oil of your choice, keep it clean and frequently changed. For the first while I wouldn’t go by mileage other then setting a maximum mileage between changes; I would be looking at the condition of the oil. If it starts to turn dark change it regardless of mileage; for the same reasons I mentioned above the different chemical packages used.
Dan.

Canadian "EH"






Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Aug 13, 2006, 12:27 PM

Post #3 of 3 (1812 views)
Re: Sludge Sign In

To add to this: Bernsax -- to tell if you even have a sludge problem look at the dipstick and under the oil fill cap.

If it's running well and there's some evidence I agree with Dan about just methodically change the oil - even early and let the oil slowly disolve the sludge - NO additives to speed it up. If it throws clots it's like a heart attack to an engine. I won that with a known sludged engine that I bought but the car was neat so I took the chance and got rid of the sludge and that car lived a long and happy life with two more owners until rust became the killer of it. I'll bet you are ok so just take care of it and it should take care of you, T







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