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Do I need to wait until the oil level is 1/2 quart low before adding Sea Foam High Mileage to the crankcase? I don’t want to overfill.
Thanks for the question, Dan. No, there is no need whatsoever to remove oil. Note that there is plenty of room an your oil crankcase for half a can of Sea Foam High Mileage, so no worries!
Jim D.TECH
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