[bridget36907]

are hydrocarbons a good test for a failed headgasket...it does not use water and the guy said the trace was really small and they could not see where the headgasket had failed.

when i got my car it had the jug for the 95 95 model and it had one hose plugged off....

i replaced the jug with a 97 model but in the jug there was black crude (signs of a afailed headgasket) could that be enough to leave traces in my system or not.

the spring in the top that came with the 97 jug from the yard was lying to the side..so i replaced it with the one off the 95-96 jug.

the 95-96 jugs say 18 psi where the 97 top said 15 psi

and when you flush the radiator do those tablets have to go in there? do they make that big a difference?