Re: Any mechanics out there?
Here are some questions that will be helpful in trying to eliminate your problem.
1. What, EXACTLY, do you mean by "bogging down"?
2. Does the car start normally when you crank the engine?
3. Does the car idle ok, or does it keep going dead. At stop lights for instance.
4. What did the spark plugs look like when you removed them? Were they covered in oil?
5. When was the last time it had a decent tune-up?
6. What size motor does the car have?
7. Have you changed the gas cap recently?
It may be the fuel, but since you buy it at different locations, I'd rule that out. Unless you have reason to believe someone has contaminated it on purpose, I highly doubt that it's the fuel. I wouldn't waste my money on fuel treatments. If someone has done this on purpose, fuel additives won't help anyway.
Your basic internal combustion engine needs three things to work properly; air, fuel, and fire. I think we can safely eliminate fuel (It could be a fuel delivery system problem though. I.E. fuel pump). By trial and error, you've already eliminated some of the possible problems though. So, your getting close to getting your ride where she needs to be. Let's hold off on the seppuku and throwing money needlessly into the AutoZone coffers though.
Fixing cars is much like fixing your favorite baseball team. Throwing money needlessly at the problem won't fix it. You have to identify the problem first, then spend your money accordingly.
"...You just have a wider lens than one game."
--Former Reds GM Wayne Krivsky, on why he didn't fly Josh Hamilton to Colorado for one game.
"...its money well-spent. Don't screw around with your freedom."
--Roy Tucker, on why you need to lawyer up when you find yourself swimming with sharks.