So before everyone goes off on me telling me about the tons of other threads I have a specific question. I plan on seafoaming my truck tomorrow and would like to make sure it's oka to do so vbecause it has high mileage. I got it at 163.xxx and the guy before me did do good maintenance on it. Now I have owned it almost a year. Done regular oil changes and such. Now it has 177.xxx would seafoam harm it because the high miles?

 

Where are you putting it?

 

Mine has a 187K miles, and I ran it thru the vacuum hose for the brakes. Didn't hurt it at all. Gotta go easy though, as it is quite easy to stall the motor..... having two people helps. Hold the revs at about 1500 while feeding it.

 

I'm gonna run 1/3 through the vacuum line off the brake booster than the rest in the gas tank.

 

I don't think it will hurt it, mine was appreciative at around 270k