I bought a mid time IO360B1E off a Piper Arrow for my RV6A. Going over it, I noticed this extra oil line welded onto the normal oil return line from left rear cylinder head to the sump. I have no idea what purpose it served. Anyone know what this would have been for? I didn't notice it until after I put on a new Superior cold air sump to point the fuel servo horizontal forward rather than backwards like it was on the Arrow.
Thanks.
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Thanks.