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Message: [QUOTE="chopair, post: 297183, member: 26539"] HELP! Technical assistance please! Fix for contaminated oil system for a Thumper 320/XR250: This weekend’s rides revealed a number of troubling issues: First was horrendous oil consumption. Next was an oil change that revealed the blackest dirtiest oil that I have ever seen after only about 30 miles, and finally upon removal of the oil filter screen from the bottom of the frame revealed that it was nearly completely filled with abrasive compound and metal chips. Inserting my finger into the frame revealed nearly a ¼ inch depth of said abrasive compound/metal mixture. It was clear that the entire oil system and engine was contaminated. The bike in question had recently had the frame powder coated bright red. The first step of this process is to glass bead blast away the old paint. The frame holes were obviously not plugged adequately to prevent this material from entering the oil fill hole and or other entry points. The previous owner flushed the system by changing the oil 4 times and running the bike between changes. I am sure that this method did remove some of the abrasive compound, while distributing the rest through every component of the engine and lubrication system. The problem is severe. I can’t really imagine a better way to sabotage a motorcycle… Unbelievably, the thing still runs fairly well, except for the fact that it uses a quart of oil in 25 miles! I need some expert opinions on how to really repair this bike. What do I have to do to ensure that this contamination is completely gone? I really like this bike and would like to bring back to a mechanically sound condition, Thanks for your help, Chopair [/QUOTE]

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