On Mon, 8 Jun 1998, Clive Apps Techno-Logicals 416 510 0020 wrote: > actually if you ran on pur oxygen it wouldn't be lean > the pistons, heads, gaskets and block would make up for the leanness > I can think of at least one engine that ran on pure oxygen and 100% EGR [and supercharged], so it can be done. Jim Davies