Posted by Tom Fleming on November 25, 2009 at 16:04:37 from (71.60.208.171):
In Reply to: Farmall Cub Oil ? posted by Lou1969 on November 25, 2009 at 13:31:14:
I will expand on Pat's post a bit. If any engine has accumulated sludge in it, ie. run on non-HD oil, and have long running times between oil changes, the HD oil will start to break down the sludge. Depending upon how much sludge has builtup in the engine, any "chunks" that dislodge could gum up an oil journal or passage.
I use Rislone in any tractor/engine that i first change the oil in. rislone will break down and disolve a good bit of the sludge in an engine. Just substitue 1 quart of rislone for 1 quart of oil in the oil change. i then run the engine up to temp for at least 5-6 hours, and not under heavy load.
Change oil and filter, and use your normal oil.
the other thing that can happen when you "clean out" the sludge in an engine is that the seals may start to leak, and the valve guids may start to seep oil, in turn causing the engine to smoke at idle. In either of these cases, the seal or the guides needed replaced to begin with.......sludge is not the answer to worn guides or seals.
as always, IMHO.
PS, I don't work for Rislone, and i don't own stock in the company. I just have been using it for over 30 years, and have had nothing but good success with it.
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