Oil Change. Motor Flush??????

[79transam]

You'll probably get a better response if you start your own post. Otherwise people see the original Subject line. Someone who really knows the answer to your Q will never see your Q here.

That way we won't have two Subjects going on in one post,either. ...just sayin'.

your right... I should start my own. this info will help also
thanks

 

[Nick Micale]

Here is my opinion and experience on using an engine flush in a turbo Buick, I doubt that it is really needed, especially if it has had normal and routine maintaince.

After seeing the insides of 1000's of these engines there never has been any large amount of sludge like many of the olds cars had.

If you did use the flush, there would not be any issue of clogging the PU screen or anything else if the proper procedure is used since the crud would be in suspension and drained out.

One case comes to mind, years ago we purchased a used truck for our fleet and found it was full of sludge. First we ran flush through it and drained it. We then poured a gallon of gas in the oil fill with the drain plug still out, and a while later poured a gallon of oil through it. Installed the plug, filled it with oil and it was in service for a few more years.

In the 90's and later vehicles, computers and fuel injection along with unleaded gas, and oils with more detergents made engine sludge a thing of the past.

Look into your oil fill hole in the valve cover, and you should be able to see if there is any sludge built up.

 

[1fastcobra]

Ok,so say you've dislodged some sludge,if you have it. Where does it go??

Right into your oil pump pickup screen.

Now you have a problem:

View attachment 213039

Ive seen that a million times
People pulling the valve covers and scraping the head with a screwdriver freeing all the build up getting out what they can. Then adding a cleaner thinking it will desolve the rest
And thats what happens to the pickup
If u don't scrape it warm the motor first. It will help unstick rings and lifters. The additive is not ment to make it spotless


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[earlbrown]

ESP bad with that stock pickup shown above.... It's got that little 'sludge bypass' flap on it. As soon as the screen gets clogged, the flap opens and send the pump everything at once.

 

[novaderrik]

use good oil and let the engine get up to temp for a while when you drive it and you should never have any sludge in it at all.

 

[Emiliano Lago]

But the flush breaks down some sludge.[/quot
yes it does but I don't recommend it,if you use that spect oil leaks that you probably didn't have before.you made of had some sludge or baked on oil sealing some of your gaskets specially if it has high milege and if you use that product it may remove that and you are going to see more leaks ,hope this helps

 

[jlat]

hello people; IMO if I had a new to me car with alot of miles I would take one valve cover off and see what it looks like. If it looked like sludge, or baked on oil I would remove the other and clean. From there I'd add a qt. of mystery oil and run that for an oil change interval if your running dino. If not put a top quality synthetic oil in and drive normally.
have fun
IBBY