best fuel for the Rotax 912 is unleaded automotive fuel (92-95 ROZ).
Klaus
Carl Pattinson wrote:
> Mark Waite said
>
> > Anyone considering using automotive fuel or oil additives in their a/c
> engine. Please don't.
>
> Thanks for the warning Mark, though I am not sure (from the comments on this
> forum) that anyone was seriously considering using an additive - certainly
> not Slick !!!!.
>
> However, having spent the last week trying to establish which oil would be
> best to use in my Rotax 912 (Europa) I came accross information from Rotax
> themselves (in my engine manuals) that certainly confused me until Fred
> Fillinger pointed me in the right direction (ie-
> www.rotax-owner.com/sdocs.htm). My operators manual says that I should use a
> good grade automotive oil without additives whereas the maintenance manual
> says use a Motorcycle grade oil with gearbox additives (note the use of the
> word "additives" !!!).
>
> A trip to my local branch of Halfords confirmed that Castrol oil was
> available in abundance (Castrol GPS and Castrol R4 Superbike) but there was
> no mention of additives (gearbox or otherwise) on any of the labels. A visit
> to the Castrol WWW site was no help either.
>
> Further research indicated that my choice of oil should be determined by
> whether I intended to use avgas or unleaded fuel. In fact once you get there
> it is all very clearly explained in the Rotax Information sheet 18UL97.
>
> From what I have eventually gleaned from the information sheet there are
> only two oils (in the UK) that fulfil the optimum requirements (ie- must be
> able to scavenge residual lead compounds from the engine and also contain
> the gearbox additives ). They are Castrol GPS and Shell Advance VSX4.
>
> I feel that a little guidance from Europa in the engine installation manual
> would not go amiss.
>
> This leads me on to the question of which is the best fuel to use. There
> seems to ba a choice between unleaded, lead replacement , 4star leaded and
> Avgas (100LL). Again I am not sure which one Rotax considers the best. No
> doubt the answer is buried somewhere in those Service Information circulars.
>
> Any suggestions !!!
>
> ----- Original Message -----
> From: "Mark Waite" <Mark@europa-aircraft.com>
> Subject: Re: Europa-Mail: Slick 50?
>
> >
> > Before working for Europa, I was sales manager for the UK subsidiary of a
> large American additive manufacturer. I can tell you that (in my experience)
> none of the commercially available, automotive additives will work in aero
> engines without producing potentially harmful side effects.
> >
> > If you want the best possible protection for your engine, buy good quality
> oil of the recommended grade, and change it regularly.
> >
> >
> > Mark A.Waite
> > Sales Manager
> > Europa Aircraft Company
> >
> >
>
>
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