Mercedes-Benz S350 LWB – All Surface Protection, G-Techniq.

My brief? Lay down some quality protection throughout.

This is a car that I have maintained from new. Initial inspection saw one or two dealer inflicted machine holograms and light scratches but overall, rather tidy.

Part of a bi-weekly maintenance plan, the Merc was given a complete strip down (previously Dealer protected with Supaguard), deep cleansed (with some localised corrections) and layered up. Future maintenance will be a doddle.


  • 3M Glass Cleaner
  • AutoSmart G101
  • AutoSmart Hazsafe
  • AutoSmart Tardis
  • Auto Finesse Rejuvenate
  • AMDetails Wheels
  • Bilt Hamber Auto-Clay
  • Dodo Juice Born To Be Mild
  • G-Techniq C1 Crystal Lacquer
  • G-Techniq C4 Permanent Trim Restorer
  • G-Techniq C5 Wheel Armour
  • G-Techniq G1 Clear Vision Glass Treatment
  • IPA (isopropyl alcohol)
  • Jeffs Werkstat Acrylic Prime
  • Meguiars Super Degreaser
  • Meguiars Metal Polish
  • Sonus Green Mild Clay (old piece for the wheels)
  • Wolfs Chemicals Decon Gel.
  • Zaino Z-16

On arrival:

As I know this car, having washed it several times already, the main area of concern for me personally, was the wheels. With so little mileage on the clocks (6000k), I could see the inner rims were becoming heavily pitted and would need sealing properly.

Wheels removed, cleaned with AMDetails’ Safe Wheel Cleaner, treated to Tardis to remove stubborn tar deposits and then soaked in Wolfs Chemicals Decon Gel. (This product (the removal of iron filings) is good, but not a PATCH on Carpro’s Iron-X. Yes, it’s cheaper. But lordy lord does it take it’s time to do it’s job (time = money and all that…))

AutoSmart Tardis dissolving some of the tar:

A couple of shots of the Decon gel is action:

Bored waiting, (at this point, I’ve still got three more rims to sort…) I decided to go back to the old school. Sonus Green clay bar…

Once stripped back, factory fresh and contaminant free, they were inside for drying and G-Techniq C5 Wheel Armour.

Blown dry (black baron vehicle dryer)

G-Techniq going on, inside and out:

So, before:

Boom. After:

Three hours down already.

Next, the body wash.

Pre-soaked with AutoSmart Hazsafe to soften surface grime

Followed by a concentrated high pressure rinse.

Re-foamed, hand washed with an AMDetails mitt and Dodo Juice Born To Be Mild shampoo.

AutoSmart back out and in action again:

Bilt Hamber’s Auto Clay used to remove other surface contaminants.

So, we have a ‘clean’ Merc. A clean Merc, with nicely protected rims!

Brought inside and dried – super plush towels & black baron blower.

Next? A few small localised corrections were made.

Series of scratches on bonnet, before/after:

These marks were spotted some weeks back.


A single hit wasn’t quite enough:



See here, the top of the N/S/R door. Machine holograms:

These were knocked out easily enough. Red Lake Country finishing pad and Scholl Concepts S40 polish.



Rest of the door looking OK:

At this point, the DA polisher was loaded with a yellow 3M polishing pad and Auto Finesse’s Rejuvenate used to deep clean and polish the paint.

Bootlid before. A few light scratches and lots of watermarks.

Polish spread:

Worked a little:

and removed:

Repeat as nesarcary.

Polishing complete. A thorough wipedown of the paint and start to layer the G.


C1 applied to all exterior paintwork:

G1 Clear Vision applied to all exterior glass (panoramic roof also protected)

Any exterior black plastic trim coated with C4.

Exhaust tips tidied with Megs Metal Polish.

Britework polished with Jeffs Prime.

3.5 hours after C1 had been applied, paintwork given one last wipe down. Interior tidied. Tyres dressed. Done.

Next up?

The Merc was a stunning car. Amazing technology.

Thanks for reading.