Trick to filling gas?

[JohnCh]

He has a problematic Zetec that is getting horrid mileage. Someone with a 420 should be able to chime in with their typical street mpg. As proxies, my Westfield, with a taller (3.62 vs. 3.92) final drive returned ~25 mpg when it had 420 cams with ITBs, and about 1-2mpg worse after changing to more aggressive cams. Highway consumption when touring was much better. The 2.4L Duratec in my Caterham is pretty thirsty, barely breaking 20 mpg in normal (back roads/around town) street use. Something would need to be wrong for you to go through 5 gallons in just 40 miles of street use in a stock 420. 

[KnifeySpoony]

My 420R with roller barrels (and Caterham tune) gets crap mileage. 70mph cruise doesn't even get 20mpg. I think around 15-18. Always been that way. That's with aeroscreen, no doors, sticky tires. 

[hahuang65]

43 minutes ago, JohnCh said:

Something would need to be wrong for you to go through 5 gallons in just 40 miles of street use in a stock 420. 

That's the only real thing I'm worried about.

5 gallon tank, no real problems there if somehow that were true. 

 

I'm used to getting 15mpg in my STI so no issues there either lol. 

 

That being said, pretty sure my friend was plowing at 100+ mph for a good portion of that 40 mile drive, maybe even half of it lol

[wdb]

8 MPG?  You may want to pull the dipstick and sniff for gas smell. 

[KnifeySpoony]

These cars have terrible aero. At over 100mph, mpg could drop pretty far... 

[CBuff]

I average just shy of 20mpg with regular cruising at 80 which puts my tach at 4100 rpm.  More spirited drops from there a bit.