I have a 73 pantera, with the 230 temp gauge in it. i have the rear jacked up and i topped off the rear swirl bottle and let it sit over night. This morning i ran it up to temp while still jacked up and it seems that the rear bottle cap is leaking. When i take that cap off it comes off in two parts and does not have a spring or anything in it. While letting it idle and bringing it to around 3K to move more coolant the temp would just creep over the 3rd unmarked temp on the guage. My worry is that im going to boil out the coolant. does anyone have a part number or direction for me?
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