Post by
drgabber »
https://forums.nicoclub.com/drgabber-u21017.html
Fri Oct 15, 2004 5:52 pm
Best thread EVER! After I got my '90 240 hatchback, I used one bottle of Seafoam in the gas tank, one bottle in the gas tank. Ran it until I was almost out of gas (less than 1/2 gal. in the tank). Then unplugged the hose from the brake booster and poured 2/3 of a bottle in. Changed the plugs, plug wires, and 02 sensor.
My 240 runs much better now, idles more consistently, and doesn't smoke when i first start her. I had about 178,000 miles on her when I did it. I was kinda worried about doing more harm than good, but worried for nothing. If you have a high-mileage 240, you owe it to your car to run Seafoam through it.