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On Fri, 2004-11-05 at 17:30, eggmeg@netzero.net wrote: > Howdy all, > > I too have the 1500S domie pistons. While my car is not on the road yet, how long can I drive it on 90 octane before it bursts into flames? > Oh, the humanity!!! > It won't "burst into flames" but you will probably get some detonation under load. This can be hard on the pistons. It usually breaks the ring lands, and causes the piston rings to seize. You can use an octane improver, but I personally didn't want to mess with it. -- Russ Wolfe '71 FB AT '66 FB MT '64 T34 (not running) '65 T1 (not running) russw@classicvw.org http://www.classicvw.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~