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Old 06-17-2017, 09:53 AM   #8 (permalink)
Cyborg ECU
California98Civic's Avatar
Join Date: Mar 2011
Location: Coastal Southern California
Posts: 5,777

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
Thanks: 2,151
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Originally Posted by oil pan 4 View Post
I have seen converters come loose and shake around in side the housing, but it makes a lot of rattling.

As an engine gets older it starts to send more oil through the exhaust due to worn rings and old or worn valve stem seals.
The detergent and anti ware additives will ash up the converter.
Cleaning will have to be more done more frequently until the engine is rebuilt.
Yeah. That kind of failure. But it will be relatively rare. That's not the life cycle of most CATs!

See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.

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