I think Some of both. I changed the hose to the carb on my riding mower with some from off the spool at AZ. That and most of the hose on the Duster seems OK. Put the filter on Duster with the 2 little pieces they give you and they about disintegrated. Most of the other hoses are good. The one to evap canister keeps deteriorating at the end. Also, the push mower I got from a friend Had not been run in years. probably never had corn juice in it. Over the first Winter I had it the fuel line turned to crap and drained the tank. But that was not new china jnk. So, I don’t know
