prepping parts for rebuild-OK to paint or powdercoat oil return tubes?

[prlwpod]

I'm still preparing a few parts for assembly on a 1978 3.0 litre motor. I bought new oil return tubes (solid) which look nice now, but I assume will discolor and rust in no time. Is it safe (as in no oil temperature rise) to spray paint or powder coat these four oil return tubes , or should I just leave them alone? Thanks for your help, regards, Paul

[HelmetHead]

I would use at minimum a Radiator paint >1000F as those tubes run right above the exhaust and also high head temperatures will cook them. We use the same 1000F paint on the engine tins between the cylinders..

[porterdog]

Powdercoat would be good in that application.

[prlwpod]

I remember reading here NOT to paint or powdercoat a particular part (can't remember) due to it somehow causing the oil to rise in temperature. Given these oil return tubes location, figured it was worth asking. Thanks again, Paul