我的檢查引擎燈亮可能是加油引起的

前幾天曾求答。
引擎燈亮了（油箱蓋絕對蓋緊了）後來又不亮了。
昨天去加油，加油後不久這個燈又亮了。這時回想起，上次就是在這家加油站加油以後燈亮了。
Google發現一篇文章：（關於豐田卡車的討論）
I would love to add my experience to this post and please tell everyone that you know!!! I have had my check engine light come on about 3 times in the last couple of months. It only comes on after filling up at a "cheap" gas station. After getting it checked out each time by my trusty friends at AutoZone I've discovered that the Ethanol is causing major engine problems in lots of cars. After each time I either filled up again at a name brand station (Mobil, Exxon, Chevron, Texaco) or bought a 99 cent bottle of gas line antifreeze which removes water. You can buy this stuff anywhere and there's quite a few brands. It fixes the problem every time. I always try to buy at the name brand stations but just to be safe I add a little of the additive every other time I fill up. I bought my car to last and it's really ticking me off to have gas ruining my engine. The article below is about boats but explains what ethanol does to an engine in general.
Hope this helps!

With gas prices soaring and no relief in sight, the idea of using lower-priced ethanol from U.S.-produced corn is an appealing alternative. But boat owners should be aware than ethanol-gasoline mixtures can be dangerous to the health of your engine.
Gasoline mixed with 10% ethanol is in widespread use in states that have banned MTBE, a chemical that adds oxygen to gas and reduces air pollution. Unfortunately, MTBE has been linked to groundwater pollution and to cancer, leading to a ban on its use in about half of U.S. states. Ethanol is commonly used as a substitute. But boat owners in those areas - especially in New York, Connecticut and California - are reporting major engine problems associated with their use of ethanol-gas mixtures.
There are three problems, two that can affect all boats and one specific to older boats with fiberglass fuel tanks.
Everyone can be affected by the first problem, which is water dissolved in the mixture. Water is practically insoluble in gasoline. Even if the gas you get from your marina is completely dry when pumped into your boat, water will get into your fuel. There's likely a buildup of water Everyone can be affected by the first problem, which is water dissolved in the mixture. Water is practically insoluble in gasoline. Even if the gas you get from your marina is completely dry when pumped into your boat, water will get into your fuel. There's likely a buildup of water at the bottom of your fuel tanks right now. That water comes from condensation that forms on the inside surfaces of the tanks with the normal fluctuations of humidity and temperature. Since the water can't dissolve into the gas and is heavier than the gas, it sinks to the bottom of your tank and sits there. As long as the level of water remains below your fuel pickup tube, it never affects your engine.

However, water is soluble in ethanol. This means that the water in your tank will dissolve into an ethanol-gas mixture and be carried along to your engine where it will degrade performance, corrode engine surfaces and can prevent your engine from running at all.

Adding fuel-water separating filters, like the Racor 10-micron separators, will trap dissolved water. Because ethanol-gas mixtures are likely to contain much more water than standard gas, you'll need to check the filters much more frequently - every time you go boating - and keep plenty of spare filter elements on hand.

Ethanol is much more dangerous in boats with fiberglass fuel tanks. Boats with fiberglass tanks built before the mid 1980s (which includes some Bertram, Hatteras and Viking models along with others) may be at risk as ethanol dissolves some of the resins in the walls of the tanks. The resins work their way through the filters, then separate out when the engines cool down and the gas flashes(evaporates) off internal engine parts. The resins stick to the engine parts and harden. The most common problem seems to be that the vales stick, resulting in bent or broken pushrods.

There have also been reports of ethanol causing problems in newer outboard engines. This is related to the third problem. Ethanol is a wonderful solvent. It's so good that when you put it in a fuel system that's not new, it dissolves the varnish and other gunk that has collected in there over the years. The newly dissolved gunk travels with the ethanol into the engine where it clogs fuel filters, carburetor jets and injectors. This isn't fatal to your engine, but can lead to engine failure while running (which can be fatal to your boat) and at the very least to costly repairs.

我試驗以後會向大家匯報