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135i_vs_ Your drained volume looks to be about 4 oz. I drained about 1 oz for 3000 miles driven. I have no sludge. I empty can when oil is changed. Don't even try to get me to wait until 12,000 miles for an oil change.
I never did any mod's to the elbows you supplied. Only mod I made was to shorten the braided hoses. I believe that your elbows haven't cracked but I equally say mine did and I didn't mod them. Switchover to brass elbows did the trick for me. During this last 3000 mile run, I got NO oil in the throttle body. There is a hockey puck thing on top of the valve cover. I've heard of those going bad from UK guys on this forum. This might explain why some of us collect so much more than others. I fall into the small collect categorie.
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