The new P100 fuel from United will the Ethanol cause issues with our fuel system, O-rings, pump, injectors. pressure reg. Anyone tried it yet. Eddie
Pretty much still a debated topic. I find the general consensus is old (1980s and older) rubber lines are the most likely to be affected but p100 is only 10% ethanol so i dont think you would notice. Some people have run e85 and higher on run of the mill rubber hose and not had an issue where others have ( probably cheap nasty hose) Go straight to e85 IMO. Some info here http://www.change2e85.com/servlet/Page?template=Myths You will want bigger pump and injectors either way
Premium 100 is not new, has been available for several years. Use it in my racecars exclusively. Never had any issues with it in other cars (1990 Supra / 1995 FTO). For the 300ZX you will want to do the injector mod so they are powered on a switched circuit not powered always. Plenty of info on this just do a search on 300ZX & ethanol.
It is a pretty good fuel and you will make more power with it if tuned correctly, just be very careful if you tune timing to Premium 100 (you can run a lot more advance) and then put a tank of 98 in, you will ping pretty bad and risk destroying your engine.
