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My AC dealer says you should not use iso in a EFI sled. Whats up with that?
 

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Ride a ZR600 EFI ('98). Almost 90 % of the gas I have used is
a 10 % ethanol blend. Do not have the "switch" either.
Has always run great and I have never had a freeze up.
Always have used "torco" synthetic or their blend.
When using a gas line anti freeze always USE the one for
efi systems.
 

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I've been running Iso-Heet (or whatever it's called...red bottle of Heet w/iso) with 87 mtbe gas. I run the switch in regular with no problems so far. Usually I add a little under a half a bottle per tank

don't run ethenol (yellow bottle of Heet) though..... =bad in efi
 

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There is nothing wrong with using a dry gas that has isopropyl alcohol in it (such as Iso-Heet in the red bottle) in any EFI system. One without the isopropyl alcohol will react with the o-rings used in the EFI system and cause them to fail.
 

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I've always used isopryl in my efi's. There is no problem. The problem comes if you don't use it and end up with water in your tank. These "dealers" give a lot of opinions that have no basis in fact. <_<
 

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I have always put it in my efi, this is the second season. I add 1/2 to 1 full bottle of berkebile gas line anti-freeze for 1 full tank of 87 or 93octane.
 
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