: Later 80's Broughams (307) - POST YOUR AVG. MPG



cmgrafmc
06-13-05, 10:18 PM
I searched elsewhere w/o much luck. Those of us with the later 1980's Broughams and the 307 Olds, please post your average city and highway mileage based upon your own experience. I'm trying to see what I ought to be getting. I'll start off:

10 MPG City/Highway:banghead:

shreddedtires
06-14-05, 04:46 AM
bout 19 to 20 for me, 1988 Caddy Fleetwood Brougham hearse, 5402 lbs empty.

davesdeville
06-14-05, 06:03 AM
19-20 highway I'd expect... right? Most people I see get around 14-15 city.

N0DIH
06-14-05, 04:45 PM
what gearing does the hearse have? Any ideas? Is there a SPID somewhere so you can run the codes?


bout 19 to 20 for me, 1988 Caddy Fleetwood Brougham hearse, 5402 lbs empty.

Spock
06-14-05, 09:00 PM
On my 86 and 88 I get 21mpg. Darn 307, on a chev 305 I can get 23!

Mind you, mpg is greaty effected by driving habits.

shreddedtires
06-15-05, 02:05 AM
what gearing does the hearse have? Any ideas? Is there a SPID somewhere so you can run the codes?

I wish I knew the gearing in the car... what does SPID stand for? The VIN number is: 1G6DW51Y3J9713170

cmgrafmc
06-15-05, 05:14 AM
Mind you, mpg is greaty effected by driving habits.

I drive it like the boat that it is. Slow take-offs, all that. I gave up on goosing it because it didn't do anything but suck up gas anyway. =P

N0DIH
06-15-05, 03:56 PM
SPID
Service Parts ID, it is a sticker in the trunk or on the spare tire cover, or sometimes in the glove box (good luck on the death rider finding it, do they even have a spare tire?).

It has the VIN, and all the option codes. So you can see what it came with factory. Very informative.

pimpin88
06-15-05, 10:57 PM
well, i've gotten my city up to 12.5, and i set the timing today, so hopefully that will help. and on the highway i get 22.5+

pimpin88
06-15-05, 10:58 PM
my city is 12.5, and i set the timing today, so hopefully that helps. and on the highway i get 22.5+