Most (all?) oil companies will tell you that mogas is not approved for aviation use. There are a number of reasons for this but one is the much greater compositional variability of mogas compared with avgas. This has little to do with additives, which are used at very low treat rates, but rather the composition of the fuel itself.
As for testing fuel in Sydney, you could, but by the time you get any results they will be meaningless because a number of batches of fuel from various offshore refineries will have passed through the distribution system in the mean time. All it would tell you is the effect on resin of the fuel which happened to be in the service station tanks 3 months ago. ...John From: Future Aviation Pty. Ltd. Sent: Tuesday, February 03, 2015 3:16 PM To: Discussion of issues relating to Soaring in Australia. Subject: Re: [Aus-soaring] Shell 98 and fibreglass Hi Ian Many thanks for sharing that with us. It confirms what Gerhard Waibel told me about 15 years ago. He said that fuel bladders are preferable to wing tanks "because you never know what additives get added to the fuel in future and what they do to the resins used in those wing tanks”. Fuel bladders are easy to replace, but wing tanks ….. Kind regards to all! Bernard On 3 Feb 2015, at 2:14 pm, Ian Mc Phee <[email protected]> wrote: This is sample of I think 3 layers of 125 glass which was left in shell 98 for about 2 months. The glass is now soft and can be easily twisted like say clear packaging. It is a bit sticky on surface. It seems it will never harden up again. Thus under no circumstances would I use Shell or Liberty 98 from say out of Brisbane in any aircraft with fibreglass tanks. Jabiru web site say do not use shell 98 in any Jabiru but 95,and Avgas is OK. Royal Dutch Shell sold out to another Dutch company for retail of fuel in Australia and they have the right to use the name Shell. My next test is sample of Shell 98 and BP 98 as well as Avgas. The Shell is a golden yellow while BP is more neutral colour. Smell is different also. If any body would like a mini movie of the sample then ask. I would urge others down south (Sydney, Vic & SA) to try their fuels. Ian mcphee <Scan 6.pdf>_______________________________________________ Aus-soaring mailing list [email protected] To check or change subscription details, visit: http://lists.internode.on.net/mailman/listinfo/aus-soaring -------------------------------------------------------------------------------- _______________________________________________ Aus-soaring mailing list [email protected] To check or change subscription details, visit: http://lists.internode.on.net/mailman/listinfo/aus-soaring -------------------------------------------------------------------------------- No virus found in this message. Checked by AVG - www.avg.com Version: 2015.0.5645 / Virus Database: 4273/9047 - Release Date: 02/02/15
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