Post
by Surrey Sam » Fri Feb 06, 2015 12:53 pm
Another Bilt Hamber Surfex HD user here. For engine grime I dilute it 5:1 and for general purpose grime I dilute down to 10:1 - you can use it neat on real heavy stuff if needed. Then I dress the engine bay with CarPro Perl at a 3:1 dilution which once dried gives a nice new look and not too glossy.
Once you've done the hard work for the first time, it will be far easier to maintain thereafter needing just a damp microfibre wipe over and a re-dress once in a while. It comes up alright I think:

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