Alex225
MB Enthusiast
- Joined
- Aug 23, 2015
- Messages
- 2,402
- Car
- CLS63 AMG
More chance of swirls on a hand washed motor than a car washed one as the brushes go longways only!!
Hand washed at the local Polish place will be similarly bad go a swirl-o-matic.
It's all in the pre-wash stage which in most places consists of a coating of harsh traffic film remover, a quick jet wash blast and scrubbed with dirty mitts.
Driving into a machine with a dirty car and letting a machine effectively batter the dirt off your car with foam brushes isn't going to do it many favours either in a detailing sense.
A hand washed car, properly pre-washed and carefully cleaned with clean mitts, two buckets and dried with towels not a chamois will remain swirl free for longer.
It's al subjective though as it is essentially cosmetic, it rightly won't make a difference to a trade in. That said a gently washed and detailed car will have a nicer, glossier paint finish and be tidier overall.
I do it for my own sake not that of the next owner of a car though.