RE: Europa-List: Re: Cruise speed data for Monowheel with 912ULS

[Paul Mansfield <europaul383@hotmail.com>]

Or 95 RON, if you believe bp:

https://www.bp.com/en/global/air-bp/aviation-fuel/ul91.html

https://www.bp.com/content/dam/bp/business-sites/en/global/air-bp/documents
/aviation-fuel/unleaded-ul91-leaflet-uk-sept2019.pdf


-------- Original message --------
From: D McFadyean <ami-mcfadyean@talktalk.net>
Date: 30/04/2021 11:19 (GMT+00:00)
Subject: Re: Europa-List: Re: Cruise speed data for Monowheel with 912ULS


Of slightly more concern is that UL91 is only 96 RON.
https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.wa
rteraviation.com%2Ffuels%2Favgas-wa-ul-91%2F&amp;data=04%7C01%7C%7C688e24
56b2d2442f717e08d90bc18138%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637
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Duncan McF.

> On 29 April 2021 at 02:33 Griffo <scangriffin@bigpond.com.au> wrote:
>
>
> Word of caution to all you aspiring fighter pilots trying for the ultimat
e performance from your engine/prop:
>
> Auto fuels (95 & 98 RON) are; Not subject to the some quality control sta
ndards of AvGas - variation due to adulteration & contamination with other 
fuels is common.
>
> I use 98 RON most of the time. 95 RON if 98 is not available and on very 
rare occasions, when no ULP obtainable, AvGas.
>
> I have always used 98 RON on the assumption (hopefully not false) that if
 the fuel had been adulterated, with other fuels (lower grade ULP petrol, E
thanol blend or diesel) then I am burning at least the equivalent of 95 RON
.
>
> So my advise is; Be conservative with the way you set up your engine/prop
>
> --------
> 46
>
>
> Read this topic online here:
>
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