Simon,
Not wanting to confuse you further, if you haven't yet made a firm decision on Opticoat, which is terrific, I can vouch for Wolf's Chemicals Hard Body. It is a true sealant and it works exactly as claimed.
Said to last between 18 months & 2 years, it's been on my 328i for 1 year now and it still works as effectively today as it did on day 1.
Cheers
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328i M-Sport, Estoril Blue, Carbon XP 35 Tint, front heated seats, black Dakota, Sports Suspension, Anthracite Headliner, HUD, Pro Nav, Sunroof, hk 600w, Bi-Xenon, 19" 403M wheels, Reversing Camera, DAB+, Xenon, BT Ext Connect, MST turbo intake pipe, MST Cold Air Intake, JB4 on Map 2 with Catless DP produces awesome performance in Sport.
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