improving highway mpg S60 R 05 5 sp auto

heyitsmebobbyd · Post by **heyitsmebobbyd** » 04 Aug 2015, 19:01

Won't switching from Premium to regular unleaded mess up your coils and plugs by fire too soon from the lower compression needed to combust the molecules?

Post by **abscate** » 08 Aug 2015, 01:56

heyitsmebobbyd wrote:Won't switching from Premium to regular unleaded mess up your coils and plugs by fire too soon from the lower compression needed to combust the molecules?

No.

Post by **oragex** » 08 Aug 2015, 12:43

Nothing you can do, unless driving slower. Higher altitude means less O2 means the engine will have less power no matter what.

Post by **abscate** » 08 Aug 2015, 14:24

Dropping from 70 to 60 is huge in my T5

Drafting saves you gas money but it is offset by a big body shop repair shop eventually