Re: 1954 packard pacific / GM 700-R4 transmission lens / radiator cap / pin hole leak

Posted by 54packpac On 2020/6/23 12:31:37

Thanks Howard. I did take it to the shop this morning. They sorted out. New neck and overflow tube. The overflow tube was not copper and clogged. Its 80 degrees here and the temp stayed right where it was supposed to when I drove home. Quite remarkable. Another question: I noticed when I replaced the GANO filter and rubber hoses with silicon hoses last week the GANO filter was full and clogged with a rubbery sludge. The coolant is Zerex original green 50/50 ethyl glycol. I have Evans but have not used yet. What was this sludge if the coolant was always nice and green? Also, what is the protocol amongst Packard peeps of adding a coolant additive like Royal Purple Purple ice to the coolant? I've added a small bottle of mishimoto liquid chill coolant additive in the past. Will additives cause sludge in general and clog the GANO filter?