Many years ago I purchased a car with so much blowby the air filter would clog in about 6 months. (Instead of a draft tube, it had a hose from the valve cover breather to the air filter cover.) So I took a Renuzit air freshener and gutted it, glued in fittings for the 'cut' hose to fit both ends and installed a foam pad inside. Every few few weeks I would pop open the 'can' and dump any oil and squeeze out the foam. Worked great. 1977 on a '68 Dodge. Maybe I should have had it patented. :lol: