You might not need a coating to last a long time because you might want to polish the car again (which would remove coating) after 2, 3 or 4 years. The odds of you keeping swirls away for years are not good.
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/// 2004 Silvergrey M3 · Coupe · 6MT · Slicktop · zero options
/// 2011 Jerez/Bamboo E90 M3 · DCT · Slicktop · IG: @na.s54
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