my coolers black ..and the temp differences on the end tanks from turbo side to inlet side.. is greatly different.... even after long drives ..i did 1400kms in 5days doing a round trip from melbourne to moama, echuca, adeliade.. and the cooler temp .. by touch remained the same ..even on 39deg day temperatures..
ppl remarked black absorbs heat .....i dont think thats a real issue when your cooler is being buffled by ambient air .... ... and i dont think it could absorb that much heat when its not near any direct heat source...well with mine anyways. and its not like its in direct sunlight all the time either. :kick:
Matt