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Oils Ain't Oils


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Are you looking for Aeroshell Sport 4 Plus? If so, it's available nearby through Peter and Anne McLean of The Lore of Flight at Yarrawonga (0357441466 or 0428752274) at $11.50/litre + freight (12 litres to a carton). They most likely have your preferred oil if this one is not suitable. This oil is the now recommended oil for Rotax users who run Avgas as it has good lead scavanging properties.







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I don't know what type of oil you are using but the Jabiru site has the following oil standard:


"Aero Oil W Multigrade 15W- 50 or






Or equivalent oil Complying with MIL-L-22851C or






Lycoming Spec301F or Teledyne Continental Spec MHF-24B."








From the Shell site this is semi synthetic. The new AeroShell Oil Sport Plus 4 is recommended for Rotax and is totally synthetic. I'm not sure if you would use it in the Jab.









"AeroShell 15w50 Oil is a multigrade ashless dipersant oil that provides the ultimate in aircraft piston engine protection over a wide range of ambient temperatures. AeroShell Oil W 15W-50 utilizes a unique blend of high quality mineral oils and synthetic base stocks combined with the AeroShell Oil W 15W-50 additive system and a unique anti-corrosion and anti-wear additive. This semi-synthetic blend offers high performance in a wide variety of applications and conditions."


"Because most 4-stroke engines now come with integrated gearbox and overload clutch systems, the same oil is in contact with all the moving parts, so it must be capable of coping with the engine, overload clutch and gearbox simultaneously.


AeroShell Oil Sport Plus 4 is ideal; as it is extremely resistant to the immense sheer forces that occur in areas of high-pressure contact such as high-speed gearboxes, valve trains, bearings, pistons and liners. This is where the blend of base oil and additives is most crucial.


AeroShell Oil Sport Plus 4 is made up of a blend incorporating synthetic technology and high performance additives to provide long lasting protection. In addition, detergents in the oil keep important areas, such as the pistons and cylinders, clear of carbon based particles that tend to adhere to these surfaces."



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