I get that flat tappet break in oil should contain elevated amounts of zinc and phosphorus. What I don't get is why there are various videos on YT that say "Don't use a detergent oil, the detergent will wash off the additives and your cam will go flat"...
Now, the only non detergent oil I am aware of is the SA and SB grades which don't contain a modern day add pack. How can there be an oil which contains all the additives necessary for flat tappet break in but not be a "detergent" oil?
Now, the only non detergent oil I am aware of is the SA and SB grades which don't contain a modern day add pack. How can there be an oil which contains all the additives necessary for flat tappet break in but not be a "detergent" oil?