want to remove oil cooler takeoff from redtop
thought they just unscrewed but feels tight (VERY) do they ???
removing this shouldnot cause any probs in a indy????
cheers
richard

Could be a big nut/ union thing in the centre holding it on.

Its about a 26mm socket, worth attaching the socket to the nut before attaching the ratchet as it is a deep nut and otherwise it won't fully engage, speaking from bitter experience!