AVGAS in lieu of ULP

Submitted: Monday, Feb 28, 2005 at 10:25
ThreadID: 20840 Views:1435 Replies:3 FollowUps:0
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As a follow up to Phil @ K question..fuel in the restricted areas. Should there be any probs running avgas straight or a blend in an unleaded motor?? We have a V6 Isuzu vehice. I'm not really trusting the New OPAL?? fuel to be available in the very near future, and where will it go??
Any Fuel experts out there who can help with this problem would be appreciated.

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Reply By: Member - Davoe (WA) - Monday, Feb 28, 2005 at 10:50

Monday, Feb 28, 2005 at 10:50
dont think the vehicles mind it but it contains heaps of lead (more than the old super) and will quickly kill a cat converter
AnswerID: 100463

Reply By: Tuco - Monday, Feb 28, 2005 at 11:30

Monday, Feb 28, 2005 at 11:30
Avgas contains tetra ethyl lead -it is used as an octane enhanser - one or two tankfull should be enough to kill the cat! (catalytic converter) Once the cat is dead then your exhaust emissions go over the moon. Better to stay with ULP in an engine designed for it.
AnswerID: 100471

Reply By: Member - Hugh (WA) - Tuesday, Mar 01, 2005 at 01:28

Tuesday, Mar 01, 2005 at 01:28
Hi Phil,

As dicussed, the lead in AVGAS will poison catalyst substrate and in addition will kill the oxygen sensor. The engine will still run but will default to a rich setting and you'll get very poor fuel economy.

Discussions with BP suggest their Opal fuel should be widely available in the near term.

BP Opal Fuel Facts

AnswerID: 100621

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