What the hell is this? (pic)

i was checking my 350 over before a ride, i took the rad cap off to check the water level and these were just sitting on the top of the rad on the INSIDE, any thoughts as to what they are?

P1000893.jpg

P1000894.jpg

Metallic?

Metallic?

its aluminium,

casting slag from the rad???have you checked a parts list for some kind of bushing?

They are machining chips, how they got there who knows

Tell me what's machined on a radiator?

Parts of the rad cap?

rad-cap is stamped.

it could have been in the water pump and it worked its way to the rad? or just somehow found its way in there.... deffinitly look like machining chips...

Swarf from some machining process.

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