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<x-charset iso-8859-1>So, would ceramic coating the pistons and heads and valves and intake and exhaust help? There are several types of coatings, to pull heat, contain it, anti-friction coatings, etc. so putting this into the mix could allow one more CR w/less heat into the engine (remove the need for external oil cooling). Just speculatin' Toby Erkson '72 VW Squareback -- big engine, rag top, 5-speed, etc. '95 VW Jetta GL III -- P-Chip, Jamex suspension, etc. '81 Gold Wing -- stock, no touring gear! Portland, OR. http://www.icbm.org/ -----Original Message----- ...Heat Kills. Outside temps do effect an air-cooled engine as does a high compression engine. Squash and swirl is great for combustion... all physics, but heat is a by product of it all. Street fuel is crap and will get worse. After market fuel additives are not worth much, they are a sales gimmick more than anything else. That is the fact not to loose sight of. Heat is the end reason that people have to use remote oil cooling systems... ------------------------------------------------ To unsubscribe, E-mail to: <type3-off@vwtype3.org> For more help, see http://vwtype3.org/list/ </x-charset>