---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Sat 08/17/24: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:30 AM - Re: Rotax 912ULS oil consumption (Area-51) ________________________________ Message 1 _____________________________________ Time: 02:30:08 AM PST US Subject: Europa-List: Re: Rotax 912ULS oil consumption From: "Area-51" 181 has a 912UL with 1500hrs on it; top end overhauled 160hrs ago. It consistently uses 100ml every 5hrs, and I am not concerned about the consumption at all using Shell Sport+. Some on other Rotax forums have mentioned using AGIP and other high performance motor cycle oils with better results, i.e reduction in oil consumption. However its unknown if these oils are formulated to retain their performance above 4500' altitudes. If a 912UL/S is not burning oil then it is possible the fuel pump membrane is leaking fuel into the lubrication system. The result is thinning engine oil snd diminishing of lubrication performance. There was an AD on this issue. On the preflight rollover burping an engine that takes longer to burp than another would indicate better sealing of the compression rings. A fast burp is not a good thing, it could be a symptom of worn compression rings. So rolling the prop over slower will burp the engine faster than rolling it over in a hurry. Always check for oil leaks at the common spots and fix them if possible; crankcase parting line, valve pushrod tubes, valve rocker covers, oil return banjo at crankcase, oil pump case cover. Hope this info helps. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=513791#513791 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message europa-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Europa-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/europa-list Browse Digests http://www.matronics.com/digest/europa-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.