Quote:
Originally Posted by some_other_dave
Making sure the car is current on maintenance can't hurt, and can only help. That said, if everything is in good shape already those changes won't have any noticeable effect on fuel economy.
-soD
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I've toyed with the notion of removing the intake manifold from the top of the engine, while letting it sit in a bucket of mineral spirits, so oil as to dissolve the carbon deposits. Then following up with a pressure washer. After all, the car has 234,700 miles on the odometer....it couldn't hurt.
I've even seen suggestions that involve using oven cleaner or Amsoil Profoam. What does everyone think of those products?