Posted by Tom Fleming on December 07, 2011 at 03:34:32 from (206.193.250.146):
In Reply to: Super A leak posted by David Lampman on December 06, 2011 at 08:42:44:
Barsleak is fine in a thermosyphon system IF it used right. Pretty simple, add the Barsleak and run the tractor up to temp, and keep it there for 30-40 mins. The circulation is fine when up to temp.
Also, the new formulation of Barsleak does NOT have the pellets like the old stuff. Barsleak is a unique polymer that reacts to being saturated. They shrink when wet, and when they hit air, they expand like blood clotting. Barsleak was developed during WWII for the US Navy to seal minor leaks on submarines. The stuff works when used properly AND it will not plug cooling systems IF used properly. Like anything else, when not used according to directions, it will produce undesirable results.
I have used barsleak on many thermosyphon systems, mostly when the drain plugs won't seal or there are minor leaks in the radiator. Works fine.
If you pour too many bottles in, and you don't run the engine up to temp, the old formulation will plug even cooling systems with water pumps on them.
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