Quote:
Originally Posted by porschenut
Curious....why is ethanol more harmful to CIS than other fuel delivery systems?
|
Two reasons:
1) Ethanol attacks elastomers (rubber) in the fuel system. Any rubber part in contact with the fuel thats not Viton suffers degradation and sooner or later, thats an expensive problem.
2) Ethanol is hygroscopic. Moisture absorbed by ethanol-laden fuel will corrode any ferrous parts in the fuel system and the Fuel Distributors are particularly vulnerable.
The constant use of Stabil will help forestall problems. Further, keep the tank full anytime the car is stored to minimize condensation.