The intake line is the fat one that runs along the top of the firewall. Let it suck the seafoam in slowly. If you rush it it'll only stall. When the liquid is gone turn the car off and let it sit for a 5 min or so. Nows the perfect time to pour the other 2/3 into the gas tank and the crank case. Start it up and let it idle for a couple minutes. Smoke should be coming out the tailpipe. Go full throttle a few times and should get a ton of smoke. Check for leaks in the engine bay as well. Smoke is not suppose to coming out of anywhere in the engine bay. When you notice less and less smoke now is the time for a little neighborhood run. Go around your neighborhood and make sure to do a couple WOT pulls. 5-10 min. of driving, but nothing more. You don't want to risk fucking anything up. Now change your oil and your oil filter.
There's also a transmission formula. Smoothed out my shifts a bit considering my auto was f'ed to all hell. Might do it to the 5 speed soon too.
P.S. Consider changing your diff fluid. Who knows how long some of you have gone without changing it
