Fred from MO
Member
Well I had rebuilt my entire engine on my 60 last winter. Some suggested using bars leak upon re-assembly to seal up any possibility of having leaks on the head gasket and or water pipe and various other areas. So I tried it after I got everything back together. The 60 ran hot after an hours of use. I limped it along this past summer and with the drought only put 40 hours on it or so. I decided to re-core the radiator and fix a leaking water pump. (note the bars leak did not stop the leaking water pump). Nor did it solve the weaping issue of the new head gasket. I was very surprized when I took the radiator apart. The bars leak seem to glob up on the top of the radiator in the fins, blocking off most of the rows. I used the block seal bars leak and follwed the application instructions based on the capacity of the cooling system. I was never really a fan of the "fix in a can" stuff on anything I intended on keeping that I didn't classify as "junk" already. But my lesson has been learned. The picture is of the top side of the core. This stuff was like a gummy coppery substance that blocked up everything. Granted the radiator did have some rows repaired to it over the years, but this gummy stuff blocked the rest of the rows up pretty good. This was after 40 hours of running the machine at an hour at a time.