Hello,
For a long time I have had a gunky red buildup on the engine, neighbor mechanic and I have differing views on the problem. Wanted to see your opinions.
I've cleaned the gunk out before, this is about.... perhaps 8 months or a years worth of build up. And my Antifreeze I add is yellow or green yet is always red when I add more, haven't flushed it fully in a while.
One pic showing engine location, from same spot zoomed in, and an even closer one showing the consitancy.

Thanks! Steve

 

No nothing, no ones seen, experience, heard of anything like this?

 

It looks to me like you have a coolant leak. I can see a greenish tint to the color. Looks like a mixture of red and green. It could be one of the plastic fittings or a hose or a sensor o-ring.