Can you flush/clean oil cooler

[gbgastowers]

I have my radiator out of may car which hasn't been run in several years. There is a lot of debris in the oil inlets and outlets. looks like hose bits. Is there a way to flush this out myself or does it have to be done at radiator shop. I thought about blowing air from bottom, or chem tool or oil in reverse flow direction. Gunar- 82 Euro S 5spd

[MPDano]

I would let the pros do it. I believe they can acid wash that bad boy good as new. Take it to a good recommended radiator shop and see what they say.

[Mrmerlin]

I would spray some brake cleaner into the oil cooler and let the tank sit for a while till the debris are loose then rinse out with some engine gunk and water then see how clean things look . If they should acid dip the tank the end tank O rings could be damaged and this could lead to a leaking radiator

[gbgastowers]

Brake clean then water did the trick. It's shiny and clean with high flow. Thanks Merlin

[Maleficio]

Awesome!

I've been wondering about the tranny fluid in the cooler lines and cooler. I want to drain/fill, but I want to get it all out, not just some of it and still have the old fluid from the cooler mixed in.