I know the following has been discussed many times, but wanted to add the following:
My Avanti is usually driven only in the high heat of the summer, and a bit in the fall.
The following is my own fuel concoction to thwart engine "nasties"......aka.....detonation/ping.
If possible I start with Sunoco 93 fuel.....to that I add:
4 ozs of CD-2 fuel additive (with Lubrizol).....the product is NLA and I utilize the stock I purchased many years ago.
6 ozs of Octane Supreme TEL additive (available from Wild Bills Corvette)
4 ozs of MMO
At the end of the driving season I fill the tank and add Star-Tron fuel stabilizer and ethanol phase preventative.
With the above, I have never experienced any ping/detonation in the summer no matter the temps and load I care to put the engine under.
My Avanti is usually driven only in the high heat of the summer, and a bit in the fall.
The following is my own fuel concoction to thwart engine "nasties"......aka.....detonation/ping.
If possible I start with Sunoco 93 fuel.....to that I add:
4 ozs of CD-2 fuel additive (with Lubrizol).....the product is NLA and I utilize the stock I purchased many years ago.
6 ozs of Octane Supreme TEL additive (available from Wild Bills Corvette)
4 ozs of MMO
At the end of the driving season I fill the tank and add Star-Tron fuel stabilizer and ethanol phase preventative.
With the above, I have never experienced any ping/detonation in the summer no matter the temps and load I care to put the engine under.
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