Idk how...buti took a road trip too carlisle,pa, im from sinking spring area. it was about 80miles. I was behind my buddy with his truck..drafting haha only about 70mph. I filled up before leaving, and after. It was 157 miles i think, then i filled up when i got back. It only took 5.4 gallons. Thats 29.4 mpg i believe. My tank is full now, a lil past the full mark and it went down to about 3/4 tank whole trip.

Would drafting make that much a difference.....


i have a 91' rs 305 tbi auto. and just turned over 163,xxx miles.

 

Drafting probably makes quite a difference. I made a trip a couple of years ago from the Seattle/Portland area (where most of my "crew" is located) to Klamath Falls, OR with about 5 other 3rd gens nose-to-tail on the freeway. At the time, my 89 was all stock and it averaged about the same as you. Normally, it would have been low to mid 20's.

 

ok so im not going crazy..good. would that mean that my engine is running pretty good?? it has a tap on cyl 5 but idk. i was worried i wouldnt make the 80 mile trip down to carlisle.

 

i also got 29.4 mpg on a road trip . i was going from ms. gulf coast to san antonio tx. . interstate , mostly flat country , used cruise control a lot . did not believe my figures at first , second tank 28.8 . my car is a true daily driver and i'm pretty **** about keeping a good tune on it . i live in a rural area and get 20+ m.p.g. in normal day to day use . my car is pretty stock with mild mods , headers , magna flow , ignition , 1.6 roller tips , moded intake .

 

Here are some other similar posts if you are interested. I found them interesting. It's suprising how restrictive these cars are. Great mpg though.

https://www.thirdgen.org/forums/tbi/624601-how-many-mpg-will.html

https://www.thirdgen.org/forums/tech-general-engine/619986-mpg.html