Engine Sludge on older v8's
New User
Joined: Nov 2012
Posts: 9
Likes: 0
Engine Sludge on older v8's
I use RISLONE in my trucks every oil change, 73 & 74 with 70+ on them.
In passenger car and light truck engines, use one bottle for a 4 to 6 liter system. Example: If using when changing oil and you have a 5 liter crankcase capacity, use 4 liters of oil and 1 liter of Rislone Engine Treatment. For larger systems, stationaSize:1 L (32 fl. oz.).
Rislone Engine Treatment is high quality penetrating lubrication oil, combined with protective engine additives and special cleaning agents. Its multi-grade formula allows the oil to flow freely and provides protection over a broader temperature range.
In passenger car and light truck engines, use one bottle for a 4 to 6 liter system. Example: If using when changing oil and you have a 5 liter crankcase capacity, use 4 liters of oil and 1 liter of Rislone Engine Treatment. For larger systems, stationaSize:1 L (32 fl. oz.).
Rislone Engine Treatment is high quality penetrating lubrication oil, combined with protective engine additives and special cleaning agents. Its multi-grade formula allows the oil to flow freely and provides protection over a broader temperature range.
Lead Driver
Joined: Jun 2006
Posts: 5,665
Likes: 986
From: Near Yosemite CA
However, in you case, you could use pretty much any spray cleaner to get that goo off before you put it back together. Brakeclean works good.
Fleet Owner
Joined: Dec 2009
Posts: 20,678
Likes: 82
From: NorCal
Sludge is typically a result of frequent short trips where the engine and oil don't get up to operating temperature -coupled with a lack of oil and filter changes.
Postmaster
Joined: Mar 2011
Posts: 2,698
Likes: 7
From: Taxachusetts
If you're bent on cleaning up that mess without pulling the motor, I would suggest using a really good industrial type vacuum cleaner and go easy with the one inch putty knife first. Then kerosene with a plenty of rags, the the suck machine again.
Good luck!
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Post Fiend
Joined: Apr 2002
Posts: 19,311
Likes: 97
From: Waterloo, Iowa
No, but I bet if the seals are already trashed then sludge removal may cause them to leak?
Postmaster
Joined: Nov 2011
Posts: 2,553
Likes: 10
If you don't want to tear it down right away I'd suggest frequent oil changes and a strong detergent oil. Something like Rotella T diesel oil and change it every 1000 miles max. Maybe 500 miles first time. That will clean it up slowly and (maybe) avoid bigger problems.
Thread Starter
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Freshman User
Joined: Oct 2013
Posts: 49
Likes: 0
Ok pulled the pan today and found this... not much sludge inside the pan and the screen for the oil pump looked good ? Now that Im this far how much is a rebuild or overhaul ? Really tight on cash but not sure what to do. Thanks again for all the input.
Senior User
Joined: May 2013
Posts: 139
Likes: 0
From: Hampton Roads VA
I am doing a 390 right now and it is going to coast me around 1200 bucks. That is for all head work, turning the crankshaft, checking the block, enginetech rebuild kit, and a summit cam. I left out the carb and intake because i assume you would use yours again. If you dont have high miles you should be able to just re-ring it for like four hundred bucks.
Elder User
Joined: Feb 2011
Posts: 575
Likes: 6
From: Knoxville, TN
You may not know what you really need until you look at the pistons/crank/bearings and such. You may get away with just a simple rering/bearing kit, then again, you may end up having to bore it out and get a rebuild kit. By looking at what you've shown, once you start breaking that stuff up, it's bound to cause more issues in the future no matter what they are. I'd finish tearing it down, and see what's needed. Line up a machine shop near by incase you need work done. If you can swing the cash and the time, rebuilding a 302 isn't horrible by anymeans and you may be able to find a rebuilt short block cheap then worry about your heads if they need anything done.....many ways to save money pending on your search skills.