Seafoam into C43 Crankcase?
 

Recently my C43 developed a cold start "tappet" sound like a sticky lifter somewhat...when the car sits for a few days then turned on it will make this sound for about 2 mins.

I was told I should use Seafoam in the oil, take it for a short trip and then change the oil. This weekend im doing a 250km (total) road trip and am somewhat due for oil change aswell so it would be the perfect situation, however I am a little nervous pouring this into my oil crankcase.

Opinions? :rolleyes:

I am second owner of the car, 140,000kms (80k miles?)

seafoam is better for injectors and expensive.Marvel Mystery Oil is cheaper and you can add to fresh oil.