Quote:
Originally Posted by Flakbadger
Hm. My best tank of gas was on hilly terrain between my house in Portland and my Grandparent's in John Day... There are several passes over 3k feet, and 2 over 5k feet. Their house sits 3k feet higher than mine.
Then I drove HOME from there and got an even better tank. I think hilly is actually okay for MPG's if you're not doing short trips and if it's all highway. The key to MY MPG's was lots of engine-on coasting down hills, sometimes in neutral, sometimes using compression braking [EDIT: Probably a lot harder in your automatic :P ].
262,000 miles makes me wonder if you might need a tune-up... And wouldn't 93 versus 91 octane benefit your car? Higher octane should be a good thing.
[EDIT 2: I misread that one. You were saying your car MUST have lost some edge since you are getting fewer MPG's on higher octane. Derpy me.]
Either way, your build threads are awesome and you have nothing but respect from me.
~Matt |
Matt,
first, thank you for your kind words!
I am always humbled to see that my underbelly thread has over 14,000 views!
I am pretty religous about the tune ups, although it's mainly repalcing the iredium plugs every 80k. I use synthetic oil and chang it and filters every 9-10k. I blow out the air filter about once a month.
You are spot on w/ your trip description! The prblem here in central texas is there is not enough elevation decrease to coast.
On a trip like yours (and my trip to Cedarville) there is alot of potential downhill coasts.
I 35 is pretty crowded and I just have never got used to P&G. (except on steep downhills)