Pressure sprayers can damage the material with too much pressure
Spray it with a soapy water from a hand sprayer and then work it in the detergent gently with a gentle brush
Another spray with a hand sprayer and clean water, and then mop up the surface with a sponge, rinsing frequently in clean water
At all times keep the engine covered (with eg an old bedsheet) to prevent dirty water from getting into the engine bay
You'll be surprised at how much grime comes off.
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XC90 R-Design MY2009, Black Sapphire Metallic. HP-Sound, RSE, Nav, Tel, ParkingCam, BLIS, ParkingHeater, RestHeat, Removable Towbar, Summer: CRATUS 20x8 on Pirelli Scorpion Zeros 255/45, Winter: NEPTUNE 17x7 on Continental WinterContact 4x4 235/65.
Last edited by SwissXC90; May 2nd, 2018 at 18:22.
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