When to change oil after adding Sea Foam in Toyota Rav4 V6[SOLVED]

I just put Sea Foam in my Toyota Rav4 V6 engine crankcase with 6 quarts of fresh 10-30 synthetic oil. My son is insisting I have to drain the oil right away.  That sounds like nonsense to me, but just checking. I was planning on leaving this in for the next 4,000 miles. Please let me know what you recommend.


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Jim D.
Jim D.
3 years ago

No worries James!  You can leave Sea Foam in oil for the life of the oil interval.  There’s no need to change the oil. Even so, we recommend adding Sea Foam to oil 100 to 300 miles before each oil and filter change.