The stains left by oil from my old Pug 205D and also the significant quantity of LHM (mineral oil based hydraulic fluid) the Xantia once dumped on drive both weathered off in weeks.
Otherwise detergent and copious water or some proprietary product. But then you'll have another problem - the cleaned area will stick out like a sore thumb.
Last edited by: Bromptonaut on Sat 25 Jun 16 at 13:03
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