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**VetteVet** · 12-03-2010, 12:27 AM

The only fuel additive I recommend is called Seafoam. I use it on FI engines and it's good for carbs too. I'm not convinced that the lack of ZDDP is harmful to the older engines except maybe the flat tappet cams on breakin. I say that because chevy engines have been flat lobing these cams since the sixties. YMMV.

I don't want to omit using gas line anti-freeze for water in the fuel but that's not really a fuel additive.

12-03-2010, 12:27 AM	#10
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,705	Re: fuel octane/additives The only fuel additive I recommend is called Seafoam. I use it on FI engines and it's good for carbs too. I'm not convinced that the lack of ZDDP is harmful to the older engines except maybe the flat tappet cams on breakin. I say that because chevy engines have been flat lobing these cams since the sixties. YMMV. I don't want to omit using gas line anti-freeze for water in the fuel but that's not really a fuel additive. __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative.