Subject: Re: New Vanos rings- increased fuel consumption? Author: webhorn4477 : member since November, 2009 : 45 posts Posted on: 2010-01-27 19:52:45

You wrote: "Don't you think you're also burning oil when your LTFT percentage goes up."

No, i don´t think so because when oil burns with the fuel in the cylinders, it also consumes oxygen. The O2-Sensors then measure less oxygen in the exhaust gas, which causes the ECU to lean out the mixture/reduce the injection time- not enrich it as in my case. So the LTFT percentage should acutally go down instead of up when you´re burning oil.

Despite that i think, the oil consumption issue is negligible in terms of the fuel adaption.
Reason: my engine consumes max. 1 litre of engine oil per 1000 kilometres, when doing a lot of engine braking. The engine consumes roughly 10 litres of fuel every 100 km. That means, it consumes 100 litres of fuel and one litre of oil when driving a distance of 1000 km. That again means, that only one percent of the burnt mineral oil products is actually engine oil- which means, it can only have an influence of 1 percent on the LTFT. Correct me if i´m wrong?

webhorn

• New Vanos rings- increased fuel consumption? - webhorn4477 2010-01-24 18:39:24 (1136 views)
  • Re: New Vanos rings- increased fuel consumption? - Rajaie 2010-01-24 22:00:24 (626 views)
    • Re: New Vanos rings- increased fuel consumption? - webhorn4477 2010-01-25 08:20:37 (684 views)
      • Re: New Vanos rings- increased fuel consumption? - Rajaie 2010-01-26 16:55:10 (578 views)
        • Re: New Vanos rings- increased fuel consumption? - webhorn4477 2010-01-27 08:55:18 (621 views)
          • Re: New Vanos rings- increased fuel consumption? - Rajaie 2010-01-27 16:22:50 (428 views)
            • Re: New Vanos rings- increased fuel consumption? - webhorn4477 2010-01-27 19:52:45 (424 views)
              • Re: New Vanos rings- increased fuel consumption? - koveras 2010-03-17 12:55:32 (416 views)
                • Yes, i did. See... - webhorn4477 2010-03-17 18:11:01 (391 views)
              • Ok. Let us know how things go (nt) - Rajaie 2010-01-28 20:16:58 (454 views)
  • Re: New Vanos rings- increased fuel consumption? - poolman 2010-01-24 19:06:05 (520 views)
    • reply@poolman - webhorn4477 2010-01-24 19:34:16 (461 views)
      • Re: reply@poolman - poolman 2010-01-24 20:26:06 (427 views)
        • Re: reply@poolman - webhorn4477 2010-01-24 20:43:17 (785 views)
          • Re: reply@poolman - Rajaie 2010-01-24 21:54:39 (457 views)
            • Re: reply@poolman - webhorn4477 2010-01-25 07:11:21 (461 views)
              • Re: reply@poolman - poolman 2010-01-26 19:36:01 (393 views)
                • Technically not... (pic) - ZetaTre 2010-01-27 17:26:42 (472 views)
                  • Great shot - poolman 2010-01-27 22:02:54 (410 views)
                    • Yea, but that's with the head off... - ZetaTre 2010-01-28 16:34:50 (379 views)
              • Re: reply@poolman (pic) - ZetaTre 2010-01-26 17:18:06 (458 views)
              • Thanks for the super info! (nt) - Rajaie 2010-01-26 15:41:51 (423 views)
              • Re: reply@poolman - poolman 2010-01-25 08:01:51 (396 views)