Josev,
You may be right I am talking about a 560sel and it should read 70% or 80% if it is a california car. So Capn check the manual for your car it should tell you the correct setting for your year and model.

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Martin Ingram
Colorado Springs
2005 320 CDI
2006.5 VW Jetta TDI
1991 560SEL (179000 Sold)
1972 280SEL 4.5 ('The Lead Sled' 320000 miles when sold.)
1972 220D (225000 when sold)