SpaZMaN

iTrader: (5)

well, i did the seafoam in the oil before i changed to oil, i added the seafoam, started it up, and did some driving, while i was in my driveway i knowticed that it made the idle go up and down about 200 rpms constantly. after i changed the oil it stopped doing this. what could cause this? possible oil getting past something causing the seafoam to get into the combustion chamber? help please!

Starz T/A 17

iTrader: (6)

How long did you leave it in the oil? I know it says not to leave it in their too long, did you add it to the intake too? When I did that it screwed with my idle a little b/c it created a vacum leak

SpaZMaN

iTrader: (5)

no, just the oil, i did the intake about 3k ago, i left it in there about 25-35 miles. it did it as soon as i added seafoam to the oil.

777

iTrader: (21)

you are only supposed to leave the seafoam in the oil for like 5 miles, but I don't know if that causes the screwy idle. Since it's fixed don't worry about it. I've had screwy things happen to my car and then the next day it fixes itself, just the ls1 i guess

SpaZMaN

iTrader: (5)

alright, i just diddent want someone to say "you have a broken piston seal letting oil past it" or something. shes happy she has fresh M1 now!

PowerShift408

iTrader: (44)

Actually it's 100-200 miles. I stick closer to the 100 mile end of it.

BirdmanLS1

iTrader: (3)

ya, i left it in for 200 miles and i idled/ran much better after the whole process.

Pizza King

iTrader: (4)

I had seafoam in my oil for 150 to 200 miles with no issues.

mcamarols1

iTrader: (9)

^^^ yup its in the stickies somewhere, i think its by chocotaco

mcamarols1

iTrader: (9)

heres the link https://ls1tech.com/forums/general-maintenance-repairs/534376-how-seafoam-your-car.html

staringback05

iTrader: (8)

i never actually drove the car when i put it in the crankcase...just let it idle for a bit and revved it up a couple times...