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Old 08-01-2021, 01:26 AM   #10
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Originally Posted by 89'HBV6 View Post
IAlso, these truck were around at the beginning of ethanol, so they're good with any octane.
I'm not trying to call you out, but these engines are not made for ethanol fuel.

Particularly, the rubbers on the injectors dissolve. It isn't as noticeable on the throttle body injectors because they are bigger, but the smaller multiport injectors use smaller rubbers that can start leaking faster.

Since 2010, I've had to replace all of my injectors 3 times. The new, replacement injectors are built to factory specs, which means the rubbers in them are still not ethanol resistant.
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