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I'm going to have my bike leak welded tomorrow and to save money I'm going to flush the system afterwards myself.

Basically my bike is oil and air cooled. The oil goes from the engine into the frame and to an oil cooler.

The right side of the frame has a hole in the bottom that was patched up when I bought it and never realized it. Because of the pressure from running the engine at high RPMs the patch failed.

So when this guy welds the hole up tomorrow he's going to drill into where the hole is and then stick or mig weld it shut.

To save monies I'm going to flush the system myself afterwards to get out all the crap that will come off when welding.

How do you propose I do this?

If the oil is carried through hoses to the frame, you can disconnect the two lines and blow air through the frame.

Yeah, the guys came and tried to weld the bike tonight, too much oil in the system still to get it to hold.

So they're going to come back after I get the bike flushed out and find anymore leaks (we found two possible other leaks).

Is there a liquid flushing type thing I can purchase? Something I put in and run the engine for 30 seconds and then drain?