Question about 1995 GMC Suburban

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95 suburban is choking out and dying after using octane boost

I thoughtlessly put ocatane booster and also a cleaner in the gas (we use ethanol) we drove a long trip with no problem, After it sat for a day, it would not stay started. Its like its getting no gas. I am thinking it couldnt handle the octane, so i put regular gas in and its worse, now cant even keep it started to move it. ALso, where is the fuel filter located to check it? is it internal? After reading, seems like this is a common problem with this model except it ran perfectly with no warnings, so I am thinking it has to do with junk in the tank. Help!

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Follow fuel lines from tank forward, and you'll probably find it along the frame rail.

Posted on Aug 30, 2008

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Premium 91 or 95


Hello Joshdhorz,

The best fuel you can use on your vehicle is any octane that contains at max 10% ethanol.

Ethanol is an alcohol-based fuel additive made by fermenting and distilling crops that have been broken down into simple sugars.

A 10% blend of ethanol and gasoline will not harm any engine or fuel system component. However, the ethanol has a cleaning effect that will remove rust and other junk from the fuel system. This necessitates frequent fuel filter changes until the fuel system is cleaned out.

Most gas stations in our area are set like so:

87 octane (Up to 10% ethanol)
89 octane (Up to 5% ethanol)
91 octane (No ethanol)

Now we do not have 93 or 95 octane available to us here, so I am currently unsure as to what is in 95 octane fuels. In my opinion, I would use 91 octane (No ethanol) for the majority, while adding 87 or 89 octane (5-10% ethanol) ever so often to clean the lines.

I hope this helps you out,

Shadow

Also if you would not mind taking a moment out of your day and rating my solution it would be greatly appreciated. Thanks in advance!


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