I have been noticing that my 2002 Toyota Tundra seems to have rough idle after gas is in it greater than 2 weeks. I use FP 3000 normally, but just ran a bottle of Regane in the last tank to see if it would help with the rough idle. At first the truck was running great (fresh fuel), but then after 2 weeks the rough idle came back. I just filled up the tank and, voila, rough idle gone. I've noticed this the last couple of fill ups with FP3000. I always add the FP3000 before I add the gas so it is well mixed. I am wondering if the FP3000 is really all that effective at stabilizing the gas. This has all been Shell gas.
I also just took my motorcycle out for a run after using FP3000 for a fuel stabilizer rather than the Stabil I have used in years past. Bike ran noticeably poor with detonation at 50% throttle until I added 2.5 gallons of fresh fuel. I don't have absolute direct comparison, but the bike had 2 month old gas in it with the FP3000. I have gone for 6 months on the Stabil and it never seemed to be that rough before.
Now I got this scanguage that monitors engine timing in real time. Would old gas cause the engine to alter its timing? I am going to start watching it from now on - right now it is at a consistent 17-18 at idle. My understanding is that the octane rating can decrease as the gasoline ages, so that would mean I would see the engine computer start to retard the timing at idle when the octane is affected - correct?
If I can get a reproduce able result (i.e. the scangauge shows 10deg timing at idle after the gas is > 2 weeks old), then I should be able to take the Pepsi challenge between Stabil and FP3000 and have something to at least measure (ignition timing).
Anyone see a problem with this? comments? suggestions?
I also just took my motorcycle out for a run after using FP3000 for a fuel stabilizer rather than the Stabil I have used in years past. Bike ran noticeably poor with detonation at 50% throttle until I added 2.5 gallons of fresh fuel. I don't have absolute direct comparison, but the bike had 2 month old gas in it with the FP3000. I have gone for 6 months on the Stabil and it never seemed to be that rough before.
Now I got this scanguage that monitors engine timing in real time. Would old gas cause the engine to alter its timing? I am going to start watching it from now on - right now it is at a consistent 17-18 at idle. My understanding is that the octane rating can decrease as the gasoline ages, so that would mean I would see the engine computer start to retard the timing at idle when the octane is affected - correct?
If I can get a reproduce able result (i.e. the scangauge shows 10deg timing at idle after the gas is > 2 weeks old), then I should be able to take the Pepsi challenge between Stabil and FP3000 and have something to at least measure (ignition timing).
Anyone see a problem with this? comments? suggestions?
