How much High Mileage in oil for a Honda Civic [SOLVED]

I have a 2017 Civic EX-T with 70K miles. I bought the High Mileage Motor Treatment. How many ounces should I add to my crankcase? Do I have to change the oil in 300 miles or can I run it for another 1400 miles till my oil change is due ?

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Jim D.
Jim D.
8 months ago

Thanks for the question, Fabio.

Add 1 ounce of High Mileage per quart of oil in your Civic. We recommend adding it when you’re 100-300 miles out from your next oil change.

Hope that helps!