Pulled the thing and drove 500 miles.

No difference in power.

Car returned 20mpg, which included 2-3 hours of stop and go traffic (I love the 495!), and highway cruise between 70-90.

Same as always.

Did not expect a change.. just reporting my findings.

__________________
'90 300SE 298k
-300K and it gets put into retirement.
'80 300D 255k Purchased new by family in 1980.

Had a:
1973 220 (gas)
1980 300SD
1992 400E