Poor MPG 1989 2.9l

[RyanL]

That goes against everything that chemistry teaches us.. It is highly doubtful that one 87 octane would give better mileage than another 87 octane..
If true you'd have a wonderful case against one or the other stations.. perhaps even both!!
Big Jim

Ps... Also if true the station with the best milage would be sold out of gas before the other one would sell a single drop..

Yeah, but I'm sure that you along with everyone else has gotten crap gas before. I don't buy into the different mileage from different stations thing either though but I have noticed in the past when I had really picky vehicles that only liked 93 octane but would run fine without pinging on some station's 89 (Amoco used to have really decent gas for example). Anyway, this stuff is really off topic. To the OP, you should be fine to check out a few sensor with your Radio Shack voltmeter. You can either disconnect them and check resistance or back probe them with ignition in the "ON" position for a little more accurate readings.

 

[Ronny Bray]

^ some gas stations add stuff to there fuel like shell is different from BP cause they have different chemicals in them

 

[cmr2]

The only differance of gas is at the termianal where it is pumped into the the tanker,most have a shared terminal ,the brand additives are added at this time ,the gas is in the same storeage tank but the addives are added at the tanker ,the law sayes that the gas at the pump has to be atleast said octane ,but not alway is it at the lesser oct can be 93,89 in the 83 ,so it happens some use the lesser oct bid up and use it there or mis the addtives for the higher and use it in the lower ,lots of reasons for better than crappy mpg's or a differance in them from one tank to another

 

[CraigK]

The quality of gas at any particular station is also affected by that facility's maintenence of their tanks. Lazy/incompetent station owners often neglect this, and water and particulates (and other chemicals) can build up in storage tanks, affecting fuel quality.

BTW - if you need gas but see a tanker at the station in the process of refilling the tanks, keep on driving. This process stirs up all kinds of crap that has been sitting at the bottom of tanks, and you are likely to get a tank of it.

CraigK

 

[RustedRanger]

+1 craigk....I think my dad or step dad told me to not get gas when ya see the tanker there.

 

[huntsman]

I didn't see anywhere, perhaps I overlooked it, but have you replaced your air filter?

 

[clayhilldave]

My '89 2.9 4x4 I'm guessing gets around 10-12 mpg. I love my truck but It's always been a gas-hog...