Adding too much Sea Foam to oil [SOLVED] Asked by Kurt Y. In Massachusetts Someone added a full can of Sea Foam to my 4 cylinder engine crankcase. Will it damage it should I drain it immediately?
Hi Kurt. You can either 1) replace the oil (complete oil change), or 2) if you recently changed your oil can drain two quarts followed by adding two quarts of fresh oil. That will get you back to the right treatment ratio.