Even without the tar I would believe 7 hours. Heck when I wax my truck once a month I spend 6-7 hours on it. It's 3 for a normal wash. Sad thing is, you really can't tell a difference when I finish.

But, I am sure that Suspect can attest to this. Its the detail work that makes the difference!! Now the rest of you can go to the touchless car wash and have at it :p
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Just another former X owner who has seen the light and wants to come back home.