08 te450 red material on small filter screen.

I found red brown and metal meterial on my filter screens. Does anyone know what this is.

I used to find brown on my 2010, never red, I would think it is some kind of thread locker inside the engine. I wouldn't sweat it, I found this on my first oil change over 5 years ago, decided to go ahead and ride the bike, ended up with over 20,000 miles before I got rid of it.

So what was it?

just an extra washer they dropped in the motor when they put it together?

It always looked like a piece off the forward oil screen to me, but my forward oil screen was intact, so...I never really knew what the deal was.

I agree with older husky rider. Looks like loctite. I've had a few little chunks of silicone in the past that looked like your brown chunk.

Could you have possibly chipped a little bit of red paint from the valve cover during a valve check?

Ya it does look like paint