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I am looking for ways repair and to inprove fuel economy.

My 1989 Dodge Colt/Vista wagon automatic gets 28 miles per gallon highway.

My 1992 little blue Dodge Colt 4 speed gets 40 to 42 MPG highway. Geting close to hybird MPG HAHAHAHAHA!!!!!! Just need another 15 or 20 mpg.

My 1992 little red Dodge Colt 5 speed gets 35 to 38 MPG highway.

my 89 2.0 turbo mirage gets 5-6 mpg on c16 hows that for good gas mileage? lol

Sounds about like my pickup with a 454 auto pulling a trailer gets 3mpg LOL

Just got back from a road trip Kansas City to just South Of Dallas Tx and back. Round trip The 1992 little blue colt 4 speed that I just got back on the road ran the trip with an AVG of 43 MPG 1126 miles took 26.12 gallons of gas, Wooo Hoooo Hows that for a non hybird! LMAO. Mind you I didnt need my Air cond running LMAO. Had a fast trip there and back to pick up a VW Jetta diesel that only ran 41 back home! My brother was sick said that just wasnt right my little colt stomping his jetta and diesel costing .40 cents a gallon more than gas. It was so funny!!!

Great mileage, I need to find me a 1.5 beater.

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John
89 Colt GT(2)
88 d50 4g63t, crower 272's, dsmlink

Next time I feel better and have the energy I plan on servicing it and doing a complete synthic oil and lube change including the wheel bearings, transmission and all. I am hoping to get it up another 2 or 3 miles per gallon! LOL It would be a blast if I could get it up to 50! That would show people that hybrids are nice but real expensive! Maybe I can do a tire and wheel upgrades, maybe a larger exhaust and a header.

If anyone has a suggestion as to what synthic oils, greases brands and grades, tire and wheel makes and sizes please let me know. Any other suggestions would be nice.

What have you done to get that mileage? I drive 204 mi round trip and could use any ideas to milk more out.

Wierd that the 4 speed has better mileage than the 5 speed. Definately change to synthetic oil, could even go 0w-40 if you were really trying to get mileage. Over pressurize your tires by 5 or so psi, less contact patch=less friction. Synthetics in the gear box, lube the suspension. If you're really into it, synthetic grease in the wheel bearings and axles. Check your brakes to make sure they're not dragging on the rotors while you're driving, even a little bit.

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Had a:
1991 Eagle Summit ES Hatchback - 4g15 12v 5spd
1991 Dodge Colt -4g15 12v 4spd
Have a:
1978 Oldsmobile Cutlass - 468BBO TH350
Round 3:
1990 Dodge Colt-4G63T 5spd

I have talked to a several of people that tell me the same thing that the 4-speeds out do the 5-speeds but thats hard to understand in my simple mind. I would love to put a 5-speed in mine. I run my timming at 8 tdc and 5-30 castro Synthetic oil, driving habits is a huge thing I always try and guess the stop light so that I dont stop and take off slower and allow more space between the cars infront of you allowing more stoping space for slowing down. Always leave your self an out. so that you dont have to brake out! LOL If you get my drift.