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02/01/2021 8:36 pm
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I have a 99 Corolla with 154k miles. No codes. Should I clean the cat as general maintenance?
Happy New Year from Texas!!
2 Answers
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02/01/2021 9:07 pm
No.
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03/01/2021 1:17 pm
Cats clean themselves! Proper oil changes and good A/F ratio will help with catalytic converter cleanliness too ; )