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My catalytic converter is one thing I dont have to worry about, I have a mani-cat. That means the converter is built into the manifold and is tucked up near the engine. The machinist I work with, whom has professional drag racing experience, said if I use some form of plastic I need to use o-rings when attaching it so the plastic can adjust itself when it heats up. He said he has seen racers just bolt it up tight and it ends up cracking. I was thinking I could attach it in a way that would be similar to the German cars, so changing the oil would be simple. That reminds me, I need to get one of those Fumoto oil drain valves. I may switch to 0W-20 when I get my oil changed next time, I'm approaching my 30,000 mile service.
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