Is Sea Foam Motor Treatment measured in fluid ounces or weight? [SOLVED]

When adding 1 ounce for each quart of oil in the crankcase, is that measured in fluid ounces or weight? I saw a YouTube video using a scale to weigh the amount.

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Jim D.
Jim D.
7 months ago

Hi Tom – thanks for the question. The instructions on a can of Sea Foam Motor Treatment refer to fluid ounces.