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Click on image for the lowdown. 
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| | | Forums66 Topics128,051 Posts1,055,766 Members48,426 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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#23569 04/04/2005 10:55 PM | Joined: Apr 2005 Posts: 1 Junior Member | | Junior Member Joined: Apr 2005 Posts: 1 | Hi. Can unleaded fuel be used in a 1969 250 straight six. The vehicle is a Grumman Olsen Stepvan that I bought here in England in 1978. At the moment I am using a lead replacement additive in the fuel, but was wondering if the engine would be damaged if I was to stop using it? | | |
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