Been letting my Saab 9-5 run at idle speed for 30 seconds before turning it off, due to this advice I've read. Only owned it 2 months so can't comment on longevity this gives the turbo!
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2009 S40 SE Lux 2.0i | 2022 Suzuki V-Strom 650 | 2002 Audi TT 225
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