On a side note, my opinion is that how you wash a vehicle is irrelevant, provided you don't do anything blatantly dumb. If you keep your cars 'forever', who will care about a few fine scratches other than you? If you do care, more power to you but it will not make a difference in how long the paint does its primary function, that is to prevent the metal underneath from corroding. Personally, I find that idolatry leads to disillusionment in the end.
If you trade your cars in, a perfect finish (above and beyond what a car wash 'might' do to it) isn't going to command a nickel more. If you sell your cars privately, it 'might' make a difference, but you will likely eat up the savings in time, effort, and $ to keep it immaculate. The next buyer will more likely be interested in how much tread is on the tires, when the battery was last replaced, or whether there is evidence of hurl anywhere in the interior.
I 'nu finish' my cars 2x a year (if that), and wash them maybe twice a winter if the weather permits. I do a fine detailing spring and fall to keep crud from accumulating. They look awesome for years.
If you trade your cars in, a perfect finish (above and beyond what a car wash 'might' do to it) isn't going to command a nickel more. If you sell your cars privately, it 'might' make a difference, but you will likely eat up the savings in time, effort, and $ to keep it immaculate. The next buyer will more likely be interested in how much tread is on the tires, when the battery was last replaced, or whether there is evidence of hurl anywhere in the interior.
I 'nu finish' my cars 2x a year (if that), and wash them maybe twice a winter if the weather permits. I do a fine detailing spring and fall to keep crud from accumulating. They look awesome for years.