Unleaded vs Super-Unleaded
Does it make a difference?
I've had my 04" Z4 3.0 for a couple weeks now. The guy I bought it from always used to fill her up with super-unleaded but since I've had her I've putting in the regular stuff and she seems a lot more reluctant to go lately.
I can't tell if I've just got used to the power (previous car was 1.2!) or if it's the fuel.
Any ideas?
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