any help would be great. I have a 1980 L48 that i was driving the other day and got stuck in traffic for a bit ran great stopped by the gas station and when i came out it was leaking real bad so I drove home the leak had stopped so i ran it for a while no leak so i changed the radiator cap let run for 20 min no leak, then today drove for 10 min to work got out and it was leaking again so when i left checked no leak never ran hot???? any ideas:bash