valve cover sludge?
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Senior User
Joined: Dec 2007
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valve cover sludge?
on an 83 carbebed stock engine that has had yearly tune-ups all its life how much sluge should it have normally in the valve cover?
-tried a few system cleaners, before takeing off to clean
-the middle two cylender had the most sludge others had sludge free spots
-performance millage get back from cleaning? how much does sludge rob?
-never been off before either
-mean anything the middle was the dirtiest?
input apreiciated thanks
-tried a few system cleaners, before takeing off to clean
-the middle two cylender had the most sludge others had sludge free spots
-performance millage get back from cleaning? how much does sludge rob?
-never been off before either
-mean anything the middle was the dirtiest?
input apreiciated thanks
New User
Joined: May 2008
Posts: 21
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From: St. Joseph, Mo
There it is dude. You don't get it up to operating temperature long enough to 'burn off' the moisture build up from combustion byproducts.
Start changing oil about every 2K miles and use Shell Rotella. JM .02
Canada = Cold...............................Don't help either.
Start changing oil about every 2K miles and use Shell Rotella. JM .02
Canada = Cold...............................Don't help either.
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Synth does clean stuff out with time, but you may develop gasket leaks by switching over with high mileage. I like, but some don't, running a can of engine flush in the oil prior to dropping the oil out. Smells like kerosene to me, but with 5000 mile oil changes, you won't see any sludge under my valve cover.
MSEE
Joined: Apr 2004
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From: Austin, TX
Sorry maverick, I thought you meant sludge on the outside, not underneath. As far as that goes I agree with everyone else's comments.
New User
Joined: May 2008
Posts: 21
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From: St. Joseph, Mo
Synth does clean stuff out with time, but you may develop gasket leaks by switching over with high mileage. I like, but some don't, running a can of engine flush in the oil prior to dropping the oil out. Smells like kerosene to me, but with 5000 mile oil changes, you won't see any sludge under my valve cover.
Another plan is to fill (to normal level) with ATF type F (whatever is cheap) and run it at light load (no trailer towing) for 100-200 miles and drain. Also works very well on lawnmower engines.
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