and the Rear arch lip where the spot welds are as that carpet holds loads of water grit salt and the rest, it flaps about and basicly sandpapers the paint on the rear lip off..... The range offers asulphonate rich waxy film which provides unparalleled protection to car underbodies. Unlike traditional paints and coatings these molecules are not bothered by corrosion products and so do not fail when applied to pre-rusted surfaces. Dynax-UC is completely safe to use on the vast majority of paint coatings and is ideal where dark coloured waxes or underseal would detract from the painted finish of vehicle bodywork or underside. the biggest issue with the focuses in my limited experience (dad had a 51 plate estate mk1B) from nearly new

Dynax-S50’s soft-film is optimised for enclosed cavities where extremely corrosive conditions develop. Dynax-S50 is also recommended for protection of valuable machinery and components in transit, machine tools, moulds etc. Dynax-S50 can be removed using suitable solvent. Dynax-S50 is not formulated for prolonged exposure to ultra-violet (UV) light. Dynax-UC can be easily removed if required with simple solvent wipes or alkaline degreasers after the aggressive winter months pass, or left in place for prolonged protection. Well I'm not really any clearer to be honest. Some saying to avoid Epoxy Mastic like the plague and others (including Mr. Hamber himself) saying use it... Dynax-S50 is also able to arrest existing corrosion and provide long-term protection to both heavily corroded and corrosion-free surfaces. For non-aerosol dispensed Dynax-S50, warming the container (loosen cap first) by standing in a hot water bath will further reduce viscosity and is beneficial where deep crevice protection is required. Never heat aerosol dispensed product. Ensure that cavities are left unclosed for a period of 48 hours to allow the escape of carrier materials before bunging or stopping.After solvent washing the panel fronts any remaining waxy film is removed, allowing inspection of the underlying surface. Assessment of the product performance is then easy. I’m sure you can decide which panel one looks best!The pressurised giant-sized Dynax-S50 aerosol dispenser accepts interchangeable heads: The 60cm cavity injection lance has a precision fluid-tip to deliver at high-pressure, a dense, finely atomised circular mist of Dynax-S50, ensuring 360 degree coverage of box sections and cavities. See image below – Follow that up by treating everywhere with Electrox. It's a fantastic Zinc Treatment. They sell it either in an aerosol or in a tin, which can be brushed on or thinned down and sprayed on. If you're spraying it on then thin it down with pure Xylene, not regular thinners. Again, give 2 coats. The final picture in the series below shows dynax S50 protected metal is still in exceptional condition. It creeps into welded seams and seals surface defects. It forms a soft, brown, wax-like film that self-heals in the event of disruption. Dynax-S50 has been proven to substantially outperform competitors cavity waxes in salt-spray trials under conditions of ASTM B117. Here are the results:

Dynax-S50 is tolerant of a broad range of application pressures and will form a coherent film upon application. Dynax-S50 will increase in viscosity at low storage temperatures. It is recommended to place the container in a room at around 15 degrees C for 24 hours prior to use, particularly when using low pressure equipment for spray application. the boot tailgate where the plastic (or in his case the chromed plastic (ghia spec) boot handle/ numberplate lamp holder rattled the paint off)The 750ml aerosols are equipped with a unique valve. Cans are charged to 70 psi and work on their side and even upside down. Dynax-S50 has a high solids content – over 50%, it’s this content that forms the anti-corrosion coating, and whilst other high solids materials don’t penetrate sufficiently Dynax-S50 creeps by capillary action deeply into seams, flanges and folded edges, in side-by-side trials Dynax-S50 has been proven to creep significantly further than other cavity waxes, some with solids contents as low as 25%. These standardised test panels have been removed from an ASTM B-117 hot salt spray trial after an extremely aggressive 2000 hours – the rear of the panels show that the steel left unprotected is almost corroded through. The giant 750ml aerosols are equipped with a unique valve and cans charged to 70 psi they work on their side and even upside down. Long term protection in seconds.

and did you apply anything else before/after?Yes that's the one, except it's now been largely superseded by Rust Encapsulator.Under bodies will benefit from steam cleaning or power washing, using our Surfex-HD degreaser/ all-purpose cleaner will provide great results, the surface should be well rinsed with plenty of clean water and then dried. For best results, the surfaces should be wiped over with white spirit or similar. After solvent washing the panel fronts any remaining waxy film is removed, allowing inspection of the underlying surface. Assessment of the product performance is then easy. The panel fronts as removed are difficult to asses as corrosion streaks and marks are left as during the test the unprotected panel edges allow corrosion deposits to pour down the vertically positioned panels.