Hi do I need a another chain for my Schwinn bicycle since it has brownish sandy metal?

Tito

New member
Hi I have Schwinn bicycle & it's been a while that I add oil on the chain. When I ride my Schwinn bicycle, it feel right but, I'm worried that if I go fast about 18mph, it could brake. I just add oil on the chain & would it be fine? Thank you.
 
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