C CharWiz New member Oct 4, 2011 #1 I usually take my car to the shop and they do this, but I will not have a chance until the weekend. Do I do it while the engine is on and idle or does the car have to be completely off? Please help. Thanks a lot!
I usually take my car to the shop and they do this, but I will not have a chance until the weekend. Do I do it while the engine is on and idle or does the car have to be completely off? Please help. Thanks a lot!
