can one use seafoam and redline sl-1 at the same time if seafoam goes into oil crankcase and redline into gas tank?

 

i don't think seafoam is meant to be anywhere near the oil or crankcase for that matter. if i remember right, that's the stuff you suck through the intake that cleans the valves,seats,pistons, and so forth. unless seafoam came out with some sort of product for oil, but i definitely don't remember seeing such a thing.

 

You can run seafoam in the oil but you can't exceed 200 miles or so, i usually run it about 50 miles then drain it and change the filter, works miracles.