After all the talk about the Seafoam, I tried it tonight on my 91 with 158000 on it. I slowly allowed a third of a can to be sucked in through a vacuum line, noted a bit of smoke, and then killed the engine for 5-6 minutes. It died twice upon restart and smoked a little, but NOTHING like what I have seen on the various youtube videos.
Is my engine just that clean or did I somehow do something wrong?
I have a 99 4runner with over 200K on it, Ill do the Seafoam about every 3-6 months, except I let it sit for atleast an hour, IMO letting it sit for 10 -20 minutes is not enough time, I try to do this at night, and let it soak overnight, DO NOT do this in the garage, lol
It does work, it does smooth things out, a little better response.